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Ian Peak
Ian Peak (-71.51667°N, 163.98333°W) is a peak in the Bowers Mountains, located 3 nautical miles (6 km) northwest of Mount Stirling where the feature overlooks the heads of Leap Year and Champness Glaciers. Named by the New Zealand Geological Survey Antarctic Expedition (NZGSAE), 1967-68, for Ian Smith, Victoria University geologist in Antarctica that season.

Iapetus Nunatak
Iapetus Nunatak (-71.6°N, -70.25°W) is an isolated nunatak at the southwest margin of Satellite Snowfield, about midway between Walton Mountains and Staccato Peaks in southern Alexander Island. Mapped by Directorate of Overseas Surveys from satellite imagery supplied by U.S. National Aeronautics and Space Administration in cooperation with U.S. Geological Survey. Named by United Kingdom Antarctic Place-Names Committee (UK-APC) from association with Saturn Glacier (nearby to the east), after Iapetus, one of the satellites of Saturn.

Ibar Rocks
Ibar Rocks (-62.45°N, -59.71667°W) is a two rocks located 0.2 nautical miles (0.4 km) east of Bonert Rock and 0.6 southeast of Canto Point, Greenwich Island, South Shetland Islands. The names "Islote Ibar" and "Islote Teniente Ibar" appearing on Chilean hydrographic charts in the 1950s refer to the larger and western rock. The recommended name Ibar Rocks includes a submerged outlier to the northeast of the larger rock. Teniente (lieutenant) Mario Ibar P. signed the official act of inauguration of the Chilean Arturo Prat scientific station on Greenwich Island in 1947.

Ibarra Peak
Ibarra Peak (-77.96667°N, 163.03333°W) is the summit at the extremity of the ridge which extends east from Royal Society Range between Mitchell Glacier and Lister Glacier, in Victoria Land. Named in 1992 by Advisory Committee on Antarctic Names (US-ACAN) after Phillip D. Ibarra, United States Geological Survey (USGS) cartographic technician; member of USGS field parties in the 1988-89, 1989-90 and 1990-91 seasons; participated in establishing geodetic control at Ross Island, McMurdo Dry Valleys, South Pole Station and, working from USCGC Ross Island.

Ice Fjord
Ice Fjord (-54.05°N, -37.68333°W) is a bay 5.5 nautical miles (10 km) tong and 2 nautical miles (3.7 km) wide, entered between Weddell and Kade Points along the south coast and near the west end of South Georgia. The name is well established, dating back to about 1920.

Ice Gate Glacier
Ice Gate Glacier (-64.9°N, -62.75°W) is a narrow hanging glacier, tributary to Astudillo Glacier, between rock spurs on the west slope of Dallmeyer Peak, Danco Coast. Named by the Polish Antarctic Expedition, about 1992, probably from the gatelike appearance of the spurs at the junction of the two glaciers.

Ice Tower Ridge
Ice Tower Ridge (-77.53333°N, 167.1°W) is a ridge at c.3540 m that descends the southwest slope of the summit crater of Mount Erebus, Ross Island. So named because the ridge is defined by a series of fumarolic ice towers.

Iceberg Bay
Iceberg Bay (-60.65°N, -45.53333°W) is a bay 3 nautical miles (6 km) wide, which indents the south coast of Coronation Island between Cape Hansen and Olivine Point, in the South Orkney Islands. Named by Matthew Brisbane, who roughly charted the south coast of Coronation Island under the direction of James Weddell in 1823.

Iceberg Point
Iceberg Point (-64.63333°N, -63.1°W) is a prominent point 8 nautical miles (15 km) west-southwest of Ryswyck Point, on the east side of Anvers Island, in the Palmer Archipelago. The point was first mapped by the Belgian Antarctic Expedition, 1897-99. The name appears on a chart based upon a 1927 survey by DI personnel on the Discovery, but may reflect an earlier naming.

Icebreaker Glacier
Icebreaker Glacier (-73.61667°N, 166.16667°W) is a large valley glacier 10 nautical miles (18 km) northeast of Mount Monteagle that flows southeast from the Mountaineer Range to Lady Newnes Bay, Victoria Land. Below Hermes Point, its flow coalesces with that of Fitzgerald Glacier. Named by the New Zealand Geological Survey Antarctic Expedition (NZGSAE), 1958-59, as a tribute to the work of the complements of U.S. Navy, and U.S. Coast Guard icebreakers in Antarctic exploration, in supporting scientists and in aiding other ships.

Icefall Nunatak
Icefall Nunatak (-72.46667°N, 166.13333°W) is a nunatak 1 nautical mile (1.9 km) north of Mount Watt in the Barker Range, Victoria Land. The nunatak was visited in 1981-82 by Bradley Field, geologist, NZGS, who suggested the name from the impressive icefalls that drop off at either side of the feature.

Icefall Nunatak
Icefall Nunatak (-78.3°N, 158.63333°W) is a prominent ice-free nunatak, 1,760 m, lying close south of the main flow of Skelton Icefalls. Named by Advisory Committee on Antarctic Names (US-ACAN) in 1964 for its proximity to Sketton Icefalls.

Icenhower Ridge
Icenhower Ridge (-80.21667°N, 158.41667°W) is a broad, mainly ice-covered ridge that rises to over 1600 m between Yancey Glacier and Sennet Glacier in Britannia Range. Named by Advisory Committee on Antarctic Names (US-ACAN) in association with Byrd Glacier and Sennet Glacier, after Commander Joseph B. Icenhower, U.S. Navy, captain of USS Sennet, a submarine (Central Group of Task Force 68) of U.S. Navy Operation Highjump, 1946-47, led by Admiral Byrd.

Ichime Glacier
Ichime Glacier (-68.38333°N, 42.13333°W) is a glacier flowing to the sea just west of Kasumi Rock in Queen Maud Land. Mapped from surveys and air photos by Japanese Antarctic Research Expedition (JARE), 1957-62, who also gave the name.

Ickes Mountains
Ickes Mountains (-75.48333°N, -139.75°W) is a series of coastal mountains that extend west from Strauss Glacier for 15 nautical miles (28 km) in Marie Byrd Land. The mountains were discovered from aircraft of the U.S. Antarctic Service on December 18, 1940. The name Ickes Mountains, after Sec. of the Interior Harold L. Ickes, appeared in the maps and reports resulting from this expedition although Ickes objected and never acquiesced to the use. Nonetheless, the name became established in usage and in 1966 was approved by the Advisory Committee on Antarctic Names (US-ACAN). The U.S. Antarctic Service was established in the Division of Territories and Island Possessions of the Department of the Interior in 1939, during the period (1933-46) that Ickes was secretary.

Mount Ida
Mount Ida (-83.58333°N, 170.48333°W) is a conspicuous bare rock mountain, 1,565 m, standing 2 nautical miles (3.7 km) west of Granite Pillars, just southeast of the head of King Glacier in Queen Alexandra Range. Discovered by the British Antarctic Expedition (1907-09), and named for Ida Jane Rule of Christchurch, New Zealand, who later married Edward Saunders, Secretary to Shackleton, who assisted in preparing the narrative of the expedition.

Idun Peak
Idun Peak (-77.63333°N, 161.43333°W) is a small peak between Mount Thundergut and Veli Peak in the Asgard Range, Victoria Land. The name, recommended by Advisory Committee on Antarctic Names (US-ACAN) in consultation with NZAPC, is one in a group of names in Asgard Range derived from Norse mythology Idun being a goddess.

Ifo Island
Ifo Island (-66.63333°N, 139.73333°W) is a low rocky island 0.2 nautical miles (0.4 km) southeast of Helene Island at the west end of Geologie Archipelago. Photographed from the air by U.S. Navy Operation Highjump, 1946-47. Charted and named by the French Antarctic Expedition under Liotard, 1949-51. Ifo is the phonetic spelling of "il faut," a much-used expression by the French Antarctic Expedition meaning "one (you) must." == See also == * List of antarctic and sub-antarctic islands

Igloo Hill
Igloo Hill (-64.55°N, -61.78333°W) is a completely ice-covered hill, 280 m, in the central part of Reclus Peninsula on the west coast of Graham Land. Shown on an Argentine government chart of 1954. Given this descriptive name by the United Kingdom Antarctic Place-Names Committee (UK-APC) in 1960.

Igloo Spur
Igloo Spur (-77.55°N, 169.26667°W) is a small, isolated spur 160 m high at the culmination of the general ridge extending southeast from Bomb Peak, at the east end of Ross Island. Mapped and so named by the New Zealand Geological Survey Antarctic Expedition (NZGSAE), 1958-59, because it was on this feature that Dr. E.A. Wilson and his party built a stone igloo during the British Antarctic Expedition, 1910-13.

Il Polo Glacier
Il Polo Glacier (-69.83333°N, 74.9°W) is a small glacier draining northward between Polar Times Glacier and Polarforschung Glacier into Publications Ice Shelf. Delineated in 1952 by John H. Roscoe from air photos taken by U.S. Navy Operation High-jump, 1946-47. Named by Roscoe for Il Polo, a polar journal published by the Instituto Geografico, Forli, Italy.

Iliad Glacier
Iliad Glacier (-64.45°N, -63.45°W) is a glacier flowing northeast from the central highlands of Anvers Island between the Achaean and Trojan Ranges into Lapeyrere Bay, in the Palmer Archipelago. Surveyed in 1955 by the Falkland Islands Dependencies Survey (FIDS) and named by the United Kingdom Antarctic Place-Names Committee (UK-APC) for Homer's Iliad.

Illusion Hills
Illusion Hills (-73.48333°N, 162.33333°W) is a small escarpment-like hills located between the Lichen Hills and Vantage Hills at the head of Rennick Glacier in Victoria Land. Named by the northern party of New Zealand Geological Survey Antarctic Expedition (NZGSAE), 1962-63, because they were found to be much more distant than anticipated.

Illusion Point
Illusion Point (-54.1°N, -36.8°W) is a point lying southeast of Cape Best, on the west side of Fortuna Bay, South Georgia. The name appears to be first used on a 1931 British Admiralty chart.

Mount Imbert
Mount Imbert (-72.56667°N, 31.46667°W) is a mountain, 2,495 m, standing close northeast of Mount Launoit in the east part of the Belgica Mountains. Discovered by the Belgian Antarctic Expedition, 1957-58, under G. de Gerlache, who named it for Bertrand Imbert, leader of the French Antarctic Expedition, 1956-57.

Mount Imhotep
Mount Imhotep (-64.35°N, -62.4°W) is a mountain rising near the head of Hippocrates Glacier in the south part of Brabant Island, in the Palmer Archipelago. First mapped by the Belgian Antarctic Expedition under Gerlache, 1897-99. Photographed by Hunting Aerosurveys Ltd. in 1956-57, and mapped from these photos in 1959. Named by the United Kingdom Antarctic Place-Names Committee (UK-APC) for Imhotep (about 2890 B.C.), who lived in Egypt and was the first physician to emerge as an individual.

Imshaug Peninsula
Imshaug Peninsula (-70.88333°N, -61.58333°W) is a broad, snow-covered peninsula at the south side of Lehrke Inlet on the east coast of Palmer Land. Mapped by United States Geological Survey (USGS) in 1974. Named by Advisory Committee on Antarctic Names (US-ACAN) for Henry A. Imshaug, United States Antarctic Research Program (USARP) biologist in a long-range biosystematic study of subantarctic floras with research at Islas Juan Fernandez, 1965-66; Falkland Islands, 1967-68; Chilean archipelago, 1969; Campbell Island, 1969-70; and Iles Kerguelen, 1970-71.

Inaccessible Cliffs
Inaccessible Cliffs (-82.55°N, 160.8°W) is a line of steep cliffs, interrupted by several glaciers, which form the northern escarpment of the Queen Elizabeth Range. The escarpment borders the southern side of the Nimrod Glacier which is very heavily crevassed. Named by the northern party of the New Zealand Geological Survey Antarctic Expedition (NZGSAE) (1961-62) because of their general inaccessibility.

Inaccessible Island
Inaccessible Island (-77.65°N, 166.35°W) is a small rocky island, the northernmost of the Dellbridge Islands, lying 1 nautical mile (1.9 km) southwest of Cape Evans, Ross Island. It is the most imposing of the group as it is nearly always bare of snow and rises to 95 meters. Discovered by the Discovery expedition (1901-04) under Scott, and so named because of the difficulty in reaching it. == See also == * List of antarctic and sub-antarctic islands

Inaccessible Islands
Inaccessible Islands (-60.56667°N, -46.73333°W) is a group of small precipituous islands ranging from 120 to 215 m high, the westernmost features of the South Orkney Islands, lying 20 nautical miles (37 km) west of Coronation Island. Discovered in December 1821 by Captain George Powell, a British sealer in the sloop sealer in the sloop James Monroe, though it is possible they are the Seal Islands seen by Palmer a year earlier. So named by Powell because of their appearance of inaccessibility. == See also == * List of antarctic and sub-antarctic islands

Inan Peak
Inan Peak (-78.33333°N, 162.63333°W) is a named after Umran S. Inan, Stanford University, who has conducted critical research since 1980 in the upper atmosphere of Antarctica at Siple Station and Palmer Station; internationally recognized as a leader in the study of upper atmospheric phenomena.

Inca Point
Inca Point (-62.3°N, -59.2°W) is a point on the northwest side of Harmony Cove, Nelson Island, in the South Shetland Islands. An isolated stack off the point bears a striking resemblance to an Inca head. The name "Punta Inca" seems first to appear on a 1957 Argentine hydrographic chart. An English form of the name has been approved.

Incisor Ridge
Incisor Ridge (-71.66667°N, 163.68333°W) is a ridge, 9 nautical miles (17 km) long, forming the southwest segment of Molar Massif in the Bowers Mountains. Named in association with Molar Massif by the New Zealand Antarctic Place-Names Committee (NZ-APC) (1983) on the proposal of geologist M.G. Laird.

Inclusion Hill
Inclusion Hill (-77.25°N, 166.41667°W) is a prominent steeply concial hill, 335 m, between McDonald Beach and the Mount Bird icecap on Ross Island. It is a trachyte plug, in parts containing numerous inclusions of basalt. Explored and descriptively named by the New Zealand Geological Survey Antarctic Expedition (NZGSAE), 1958-59.

Independence Hills
Independence Hills (-80.41667°N, -81.55°W) is a line of rugged hills and peaks, 10 nautical miles (18 km) long. with mainly bare rock eastern slopes. They lie 3 nautical miles (6 km) southeast of Marble Hills and form the south segment of the west wall of Horseshoe Valley, in the Heritage Range. Independence Hills were mapped by United States Geological Survey (USGS) from ground surveys and U.S. Navy air photos, 1961-66. The name was applied by Advisory Committee on Antarctic Names (US-ACAN) in association with the name Heritage Range.

Mount Inderbitzen
Mount Inderbitzen (-78.81667°N, -84.78333°W) is a mountain rising to over 2,600 m, located 12 nautical miles (22 km) south-southeast of Mount Craddock and 1.5 nautical miles (2.8 km) south of Mount Milton in the south part of the Sentinel Range, Ellsworth Mountains. First mapped by United States Geological Survey (USGS) from surveys and U.S. Navy aerial photographs, 1957-59. Named by Advisory Committee on Antarctic Names (US-ACAN) in 1994 after Anton L. Inderbitzen, Associate Chief Scientist, Division of Polar Programs, National Science Foundation (NSF), 1983-86; Head, Antarctic Staff, NSF, 1986-91; Deputy Assistant Director for Research, USGS, from 1991. At NSF, Inderbitzen was responsible for the coordination and planning of all scientific activities within the United States Antarctic Program (USAP), and for the formulation and enforcement of U.S. environmental regulations in Antarctica.

Index Peak
Index Peak (-65.81667°N, -64.43333°W) is a peak over 1,220 m, standing 7.5 nautical miles (14 km) southeast of Cape Garcia on the west coast of Graham Land. Mapped by the Falkland Islands Dependencies Survey (FIDS) from photos taken by Hunting Aerosurveys Ltd. in 1956-57. So named by the United Kingdom Antarctic Place-Names Committee (UK-APC) because the peak resembles an index finger.

Index Point
Index Point (-73.35°N, 167.91667°W) is a low, ice-covered point that forms the east extremity of the Mountaineer Range on the coast of Victoria Land. The feature lies at the terminus of Mariner Glacier, 1.5 nautical miles (2.8 km) west of Emerging Island. So named in 1966 by New Zealand Antarctic Place-Names Committee (NZ-APC) because the shape is suggestive of an index finger.

Indian Rocks
Indian Rocks (-62.48333°N, -60.28333°W) is a group of rocks in Hero Bay, lying east of Wood Island off the north coast of Livingston Island, in the South Shetland Islands. Named by the United Kingdom Antarctic Place-Names Committee (UK-APC) in 1958 after the sealer Indian (Captain Spiller) of Liverpool, which visited the South Shetland Islands in 1820-21 and brought back some of the crew of the wrecked Cora from nearby Desolation Island.

Indicator Island
Indicator Island (-65.25°N, -64.26667°W) is an island 0.1 nautical miles (0.2 km) long, lying 0.1 nautical miles (0.2 km) west of the northwest end of Galindez Island in the Argentine Islands, Wilhelm Archipelago. Charted and named in 1935 by the British Graham Land Expedition (BGLE) under Rymill. A wind sock was erected on this island by the BGLE to indicate wind direction for the expedition's airplane. == See also == * List of antarctic and sub-antarctic islands

Indrehovdeholmen
Indrehovdeholmen (-69.18333°N, 39.55°W) is an island lying 1.5 nautical miles (2.8 km) west of Langhovde-kita Point in the east part of Lutzow-Holm Bay. Mapped by Norwegian cartographers from air photos taken by the Lars Christensen Expedition, 1936-37, and named Indrehovdeholmen (the inner knoll island) because of its position among the islands adjacent to Langhovde Hills.

Inepta Cove
Inepta Cove (-62.7°N, -60.3°W) is a cove on the east side of False Bay, Livingston Island, in the South Shetland Islands. The feature was named "Caleta Inepta" (inept cove) on a 1954 Argentine navy chart, reflecting the inadequacy of the cove as an anchorage. The name has been approved with an English generic term.

Ineson Glacier
Ineson Glacier (-64.06667°N, -58.36667°W) is a glacier flowing northwest into Gin Cove, James Ross Island. Following geological work by British Antarctic Survey (BAS), 1981-83, named by the United Kingdom Antarctic Place-Names Committee (UK-APC) after Jonathan R. Ineson, BAS geologist in the area.

Inexpressible Island
Inexpressible Island (-74.9°N, 163.65°W) is an island, 7 nautical miles (13 km) long, in Terra Nova Bay, Victoria Land, lying close south of the Northern Foothills at the outer edge of the Nansen Ice Sheet. First explored by the Northern Party of the British Antarctic Expedition, 1910-13, and called "Southern Foothills" in contradistinction to the Northern Foothills. The name was changed to Inexpressible Island by the party after spending a very unpleasant winter on half rations in a cave in a snowdrift on the island. == See also == * List of antarctic and sub-antarctic islands

Inferno Peak
Inferno Peak (-72.11667°N, 165.98333°W) is a peak 3 nautical miles (6 km) north of Le Couteur Peak in the north end of Millen Range. So named by the Southern Party of NZFMCAE, 1962-63, because geologic examination showed it contained the granite/greywacke contact, with baking of the sedimentary rock imparting a reddish color to the peak.

Inferno Ridge
Inferno Ridge (-79.43333°N, -84.21667°W) is a narrow ridge, 8 nautical miles (15 km) long, rising between Schneider and Rennell Glaciers in the Heritage Range. So named by the University of Minnesota Geological Party to these mountains, 1963-64, because the area is deeply dissected and composed of black rocks.

Ingham Glacier
Ingham Glacier (-72.83333°N, 168.63333°W) is a tributary glacier 3 nautical miles (6 km) west of Humphries Glacier, flowing south into Borchgrevink Glacier in the Victory, Mountains, Victoria Land. Mapped by United States Geological Survey (USGS) from surveys and U.S. Navy air photos, 1960-62. Named by Advisory Committee on Antarctic Names (US-ACAN) for Clayton E. Ingham, New Zealand geophysicist at Hallett Station, 1957.

Ingrid Christensen Coast
Ingrid Christensen Coast (-69.5°N, 77°W) is that portion of the coast of Antarctica lying between Jennings Promontory, in 7233E, and the western end of the West Ice Shelf in 8124E. The coast was discovered and a landing made on Vestfold Hills, February 20, 1935, by Captain Klarius Mikkelsen in the Thorshavn, a vessel owned by Norwegian whaling magnate Lars Christensen. Named for Ingrid Christensen, wife of Lars Christensen, who sailed in Antarctic waters with her husband. The southwestern portion of this coast was discovered and photographed from the air by U.S. Navy Operation Highjump in March 1947.

Cape Ingrid
Cape Ingrid (-68.76667°N, -90.7°W) is a dark rock promontory separating Norvegia Bay and Sandefjord Cove on the west side of Peter I Island. Discovered in 1927 by a Norwegian expedition under Eyvind Tofte in the Named for Ingrid Christensen, the wife of Lars Christensen.

Inland Forts
Inland Forts (-77.63333°N, 161°W) is a line of peaks extending between Northwest Mountain and Saint Pauls Mountain, in the Asgard Range of Victoria Land. Discovered and so named by the Discovery expedition, 1901-04.

Inman Nunatak
Inman Nunatak (-74.81667°N, -98.9°W) is a nunatak standing 6 nautical miles (11 km) east of Mount Manthe in the southeast part of the Hudson Mountains. Mapped by United States Geological Survey (USGS) from surveys and U.S. Navy air photos, 1960-66. Named by Advisory Committee on Antarctic Names (US-ACAN) for Martin M. Inman, auroral scientist at Byrd Station, 1960-61 and 1961-62 seasons.

Inner Bay
Inner Bay (-54.01667°N, -37.96667°W) is a small bay lying southeast of The Knob in Elsehul, near the west end of South Georgia. The name appears to be first used on a 1931 British Admiralty chart.

Inner Crater
Inner Crater (-77.53333°N, 167.16667°W) is the topographic feature that embraces the crater within the floor of Main Crater, q.v., at the summit of Mount Erebus, Ross Island. Inner Crater contains an active anorthoclase-phonolite lava lake. The name derives from the fact that the crater is within the Main Crater of Mount Erebus.

Inner Harbor
Inner Harbor (-64.31667°N, -63°W) is a small harbor in the Melchior Islands, Palmer Archipelago, formed by the semi-circular arrangement of Lambda, Epsilon, Alpha and Delta Islands. The descriptive name was probably given by DI personnel who roughly surveyed the harbor in 1927. It was resurveyed by Argentine expeditions in 1942, 1943 and 1948.

Inner Lee Island
Inner Lee Island (-54.03333°N, -37.26667°W) is a small island 0.8 nautical miles (1.5 km) north-northeast of Luck Point, lying in the Bay of Isles, South Georgia. This island was charted in 1912-13 by Robert Cushman Murphy, American naturalist abroad the brig the Lee Islands. These islands were recharted in 1929-30 by DI personnel, who renamed this southwestern of the two, Inner Lee Island. The northeastern island is now known as Outer Lee Island. == See also == * List of antarctic and sub-antarctic islands

Inner Reef
Inner Reef (-54.1°N, -37.13333°W) is a reef extending from Adventure Point to Brown Point, near the head of Possession Bay, South Georgia. The name appears to be first used on a 1931 British Admiralty chart.

Mount Innes-Taylor
Mount Innes-Taylor (-86.85°N, -154.45°W) is a mountain, 2,730 m, standing 1 nautical mile (1.9 km) north of Mount Saltonstall at the south side of Poulter Glacier, in the Queen Maud Mountains. Discovered in December 1934 by the Byrd Antarctic Expedition geological party under Quin Blackburn, and named by Byrd for Captain Alan Innes-Taylor who served with the expedition as chief of trail operations.

Innhovde Point
Innhovde Point (-69.86667°N, 37.16667°W) is a lone bare rock point located along the inner, icefilled shore of Fletta Bay, on the southwest side of Lutzow-Holm Bay. Mapped by Norwegian cartographers from air photos taken by the Lars Christensen Expedition, 1936-37, and named Innhovde (inner knoll).

Inott Point
Inott Point (-62.51667°N, -60°W) is a point 1 nautical mile (1.9 km) north-northeast of Edinburgh Hill on the east coast of Livingston Island, South Shetland Islands. In association with the names of nineteenth century sealers in this area, named by United Kingdom Antarctic Place-Names Committee (UK-APC) after Captain Robert Inott, Master of the American sealing ship Samuel (Samuel Peak, q.v.) from Nantucket, who visited the South Shetland Islands, 1820-21.

Insel Range
Insel Range (-77.4°N, 161.33333°W) is a series of ice-free flat-topped peaks resembling islands which rise above the surrounding terrain and separate McKelvey Valley from Balham Valley, in Victoria Land. So named by the Victoria University of Wellington Antarctic Expedition (VUWAE) (1958-59) because of the resemblance to islands.

Mount Insel
Mount Insel (-77.38333°N, 161.53333°W) is the highest point in the northeast part of the Insel Range, in Victoria Land. Named by the Victoria University of Wellington Antarctic Expedition (VUWAE) (1958-59) in association with Insel Range.

Inspiration Rocks
Inspiration Rocks (-73.43333°N, -94.08333°W) is a group of rock outcrops at the north edge of Cache Heights, in the Jones Mountains. Mapped by the University of Minnesota-Jones Mountains Party, 1960-61. So named by the party because from these rocks almost the entire Jones Mountains come into view.

Instekleppane Hills
Instekleppane Hills (-70.03333°N, 38.88333°W) is a group of low rock hills that protrude above the ice slopes at the east side of Shirase Glacier, close south of the southeast extremity of Lutzow-Holm Bay. Mapped by Norwegian cartographers from air photos taken by the Lars Christensen Expedition, 1936-37, and named Instekleppane (the innermost lumps).

Insteodden Point
Insteodden Point (-69.96667°N, 38.76667°W) is a rock point along the east side of Havsbotn, lying 1 nautical mile (1.9 km) southwest of Strandnebba at the extreme southeast corner of Lutzow-Holm Bay. Mapped by Norwegian cartographers from air photos taken by the Lars Christensen Expedition, 1936-37, and named Insteodden (the innermost point).

Institut Geologii Arktiki Rocks
Institut Geologii Arktiki Rocks (-70.93333°N, 11.5°W) is a group of scattered rock outcrops that extend in an east-west direction for 20 nautical miles (37 km), located 7 nautical miles (13 km) south of the Schirmacher Hills in Queen Maud Land, Discovered and plotted from air photos by German Antarctic Expedition, 1938-39. Mapped from air photos and surveys by Norwegian Antarctic Expedition, 1956-60; remapped by Soviet Antarctic Expedition, 1960-61, and named after the Institute of Arctic Geology.

Institute Ice Stream
Institute Ice Stream (-82°N, -75°W) is an ice stream flowing north into Ronne Ice Shelf, southeast of Hercules Inlet. The feature was traversed by the United States Antarctic Research Program (USARP) Ellsworth-Byrd Seismic Party, 1958-59, and the USARP-University of Wisconsin Seismic Party, 1963-64. It was delineated by the Scott Polar Research Institute (SPRI)-National Science Foundation (NSF)-Technical University of Denmark (TUD) airborne radio echo sounding program, 1967-79, and in association with Foundation Ice Stream and Support Force Glacier, named after the Scott Polar Research Institute, Cambridge, England.

Intention Nunataks
Intention Nunataks (-72.93333°N, 163.76667°W) is a group of peaked nunataks between Solo Nunatak and Forgotten Hills, at the southwest margin of Evans Neve. The surveyor's intention to place a survey station here was thwarted by weather and other factors. Named by the Northern Party of New Zealand Geological Survey Antarctic Expedition (NZGSAE), 1962-63.

Intercurrence Island
Intercurrence Island (-63.91667°N, -61.4°W) is an island 4.5 nautical miles (8 km) long, the largest of the Christiania Islands, lying 8 nautical miles (15 km) east-northeast of Liege Island at the northeast end of Palmer Archipelago. Though the origin of this name is unknown, it has appeared on maps for over a hundred years and its usage has been established internationally. == See also == * List of antarctic and sub-antarctic islands

Intrusion Lake
Intrusion Lake (-54.48333°N, -37.06667°W) is a lake, 0.2 nautical miles (0.4 km) long, located north-northeast of Olstad Peak in central Annenkov Island, South Georgia. Mapped by British Antarctic Survey (BAS) in 1972-73 and so named because its irregular shape is controlled by several intrusions of andesite along its north shore.

Intrusive Spur
Intrusive Spur (-73.5°N, -94.41667°W) is a rock spur along the north front of the Jones Mountains, 1 nautical mile (1.9 km) west of Avalanche Ridge. Mapped by the University of Minnesota-Jones Mountains Party, 1960-61. So named by the party because the intrusive complex of the basement rocks of the Jones Mountains is well exposed on the spur.

Inverleith Harbor
Inverleith Harbor (-64.53333°N, -63°W) is a small bay between Andrews Point and Briggs Peninsula along the northeast coast of Anvers Island, in the Palmer Archipelago. Presumably discovered by whalers working in this area who gave the name Inverleith or Leith Harbor. Inverleith Harbor ("inver" meaning the place of meeting of rivers or where a river falls into the sea or take) is recommended because the name Leith Harbor is used elsewhere in the Antarctic. Leith, Scotland, is the home of Salvesen and Co., a whaling firm which has operated extensively in Antarctic waters.

Mount Inverleith
Mount Inverleith (-64.91667°N, -62.75°W) is a mountain, 1,495 m, standing near the edge of the plateau escarpment 2 nautical miles (3.7 km) east-northeast of the head of Skontorp Cove, on the west coast of Graham Land. First charted and named Iverleith Hill by Scottish geologist David Ferguson in 1913-14.

Invisible Island
Invisible Island (-54.01667°N, -37.31667°W) is a small, tussock-covered island lying close southeast of Crescent Island and Mollyhawk Island in the Bay of Isles, South Georgia. Charted in 1912-13 by Robert Cushman Murphy, American naturalist aboard the brig Daisy. Probably named by DI personnel who surveyed the Bay of Isles in 1929-30. == See also == * List of antarctic and sub-antarctic islands

Ionosphere Bay
Ionosphere Bay (-66.76667°N, 141.58333°W) is a small bay bordering the east side of Cape Decouverte. Charted in 1951 by the French Antarctic Expedition and named by them for the corresponding scientific discipline.

Mount Iphigene
Mount Iphigene (-76.51667°N, -145.83333°W) is a mountain just west of Ochs Glacier between Marujupu Peak and Birchall Peaks, in the Ford Ranges of Marie Byrd Land. Discovered in 1929 by the Byrd Antarctic Expedition, and named by Byrd for Iphigene Ochs Sulzberger, daughter of Adolph Ochs and wife of Arthur Sulzberger, patrons of the expedition.

Iquique Cove
Iquique Cove (-62.48333°N, -59.66667°W) is a small cove in the east side of Discovery Bay, Greenwich Island, South Shetland Islands. The cove is immediately adjacent to the Arturo Prat Station on Guesalaga Peninsula. Named by Chile after the naval frigate Iquique which landed the first occupation party here in 1947.

Iris Bay
Iris Bay (-54.7°N, -35.93333°W) is a small bay immediately south of Muller Point at the east end of South Georgia, lying 6 nautical miles (11 km) northwest of Cape Vahsel, along the embayment between Cape Vahsel and Cape Charlotte. The name Sandwich Bay, for John Montagu, 4th Earl of Sandwich, was given to the whole embayment between Cape Vahsel and Cape Charlotte in 1775 by a British expedition under Cook. The name was later restricted on maps to the small bay described, since a name for the large embayment was not considered useful. The SGS, 1951-52, reported that the name Iris Bay for the same feature is well established in use among the whalers and sealers in South Georgia, and that the name Sandwich Bay is unknown locally. Iris Bay is approved to conform with local usage.

Irizar Island
Irizar Island (-65.21667°N, -64.2°W) is an island 0.5 nautical miles (0.9 km) long, lying 0.5 nautical miles (0.9 km) northeast of Uruguay Island in the northeast part of the Argentine Islands, in the Wilhelm Archipelago. Discovered by the French Antarctic Expedition, 1903-05, under Charcot, and named by him for Captain Julian Irizar, Argentine Navy. The island was recharted in 1935 by the British Graham Land Expedition (BGLE) under Rymill. == See also == * List of antarctic and sub-antarctic islands

Cape Irizar
Cape Irizar (-75.55°N, 162.95°W) is a bold rocky headland that forms the north end of Lamplugh Island, off the coast of Victoria Land. Discovered by the Discovery expedition, 1901-04, under Scott. He named it for Captain Jullan Irizar, of the Argentine naval vessel Urguay, who rescued the shipwrecked members of the Swedish Antarctic Expedition of 1901-04.

Ironside Glacier
Ironside Glacier (-72.13333°N, 169.66667°W) is a spectacular glacier, about 30 nautical miles (60 km) long, originating at the south side of Mount Minto in the Admiralty Mountains and draining southeast between Mount Whewell and Mount Herschel into Moubray Bay, Victoria Land. At its mouth it is joined by the Honeycomb Glacier flowing in from the north. The name is suggested by an association of ideas involved in the name Admiralty Mountains, and by the impression of power given by the great icefall in the lower portion of the glacier. Named by the New Zealand Geological Survey Antarctic Expedition (NZGSAE), 1957-58.

Iroquois Plateau
Iroquois Plateau (-83.85°N, -54°W) is a large, mainly ice-covered plateau situated east of the southern part of the Washington Escarpment in the Pensacola Mountains. Mapped by United States Geological Survey (USGS) from surveys and U.S. Navy air photos, 1956-66. Named by Advisory Committee on Antarctic Names (US-ACAN) after the Bell UH-1 "Iroquois" helicopter which has greatly facilitated field operations in Antarctica.

Irvine Glacier
Irvine Glacier (-74.7°N, -63.25°W) is a glacier, 40 nautical miles (70 km) long, draining southeast between the Guettard and Rare Ranges into the north part of Gardner Inlet. Discovered by the Ronne Antarctic Research Expedition (RARE), 1947-48, under Ronne, who named it for George J. Irvine, of the Engineer Depot at Fort Belvoir, VA, who outlined the RARE photographic program.

Mount Irvine
Mount Irvine (-77.63333°N, 162.26667°W) is a

Irving Glacier
Irving Glacier (-76.21667°N, 160.26667°W) is a glacier that flows northwest between Coombs Hills and Wyandot Ridge to enter Odell Glacier, in the Convoy Range, Victoria Land. Named in association with nearby Wyandot Ridge after Captain R.K. Irving, U.S. Navy, commander of USS Wyandot (AKA-92), a cargo ship in the Ross Sea Unit in Operation Deep Freeze IV, 1958-59.

Irving Island
Irving Island (-66.41667°N, -67.06667°W) is a small island at the northeast end of the Barcroft Islands, in the Biscoe Islands. Mapped from air photos taken by Falkland Islands and Dependencies Aerial Survey Expedition (FIDASE) (1956-57). Named by United Kingdom Antarctic Place-Names Committee (UK-APC) for Laurence Irving, American physiologist who has specialized in the effects of a polar environment. == See also == * List of antarctic and sub-antarctic islands

Irving Point
Irving Point (-56.71667°N, -27.11667°W) is a point forming the east extremity of Visokoi Island in the South Sandwich Islands. Discovered and first roughly charted in 1819 by a Russian expedition under Bellingshausen. It was named Penguin Point, because of a rookery there, by DI personnel following their survey in 1930, but that name has been changed because it is already in use for other features. Irving Point was recommended by the United Kingdom Antarctic Place-Names Committee (UK-APC) in 1953 and is for Lieutenant Commander J. Irving, Royal Navy, who made sketches of the South Sandwich Islands from the Discovery II in 1930.

Mount Irving
Mount Irving (-61.28333°N, -54.13333°W) is a mountain that is the dominant elevation in the southern part of Clarence Island, in the South Shetland Islands. A prominent feature, the mountain doubtless was known to sealers in the area in the 1820s. Named by United Kingdom Antarctic Place-Names Committee (UK-APC) for Rear Admiral Sir Edmund George Irving, Royal Navy, Hydrographer of the Navy, 1960-66.

Irwin Glacier
Irwin Glacier (-71.11667°N, 163.41667°W) is a steep tributary glacier in the Bowers Mountains, draining northeast from Edlin Neve and at the terminus coalescing with Montigny Glacier (from the north), with which it enters the larger Graveson Glacier. Mapped by United States Geological Survey (USGS) from surveys and U.S. Navy air photos, 1960-64. Named by Advisory Committee on Antarctic Names (US-ACAN) for Carlisle S. Irwin, glaciologist, who participated in the study of Meserve Glacier in 1966-67.

Cape Irwyn
Cape Irwyn (-84.68333°N, -170.08333°W) is a rock cape at the edge of the Ross Ice Shelf forming the north extremity of Lillie Range in the foothills of the Prince Olav Mountains. Named by the Southern Party of the New Zealand Geological Survey Antarctic Expedition (NZGSAE) (1963-64) for Irwyn Smith, relief radio operator at Scott Base, 1963-64.

Isaacson Point
Isaacson Point (-59.43333°N, -27.05°W) is the southeast point of Bellingshausen Island in the South Sandwich Islands. Charted by DI personnel on the Discovery II in 1930 and named for Ms. S.M. Isaacson, an assistant to the staff of the Discovery Committee.

Isachsen Mountain
Isachsen Mountain (-72.18333°N, 26.25°W) is a large mountain rising to 3,425 m, standing 4 nautical miles (7 km) southeast of Mount Bergersen in the Sor Rondane Mountains. Mapped by Norwegian cartographers in 1957 from air photos taken by U.S. Navy Operation Highjump, 1946-47, and named for Maj. Gunnar Isachsen, leader with Captain Hjalmar Riiser-Larsen of the Norwegian expedition 1930-31.

Isacke Passage
Isacke Passage (-66.9°N, -67.25°W) is a marine channel in Hanusse Bay between Liard Island and Arrowsmith Peninsula on the west coast of Graham Land. Discovered and first charted by the French Antarctic Expedition, 1908-10, under Charcot. Named by United Kingdom Antarctic Place-Names Committee (UK-APC) for Captain Christopher J. Isacke, Royal Navy, commanding officer of HMS Endurance in the Antarctic Peninsula area, 1972-74.

Isakson Nunatak
Isakson Nunatak (-74.83333°N, -73.7°W) is a nunatak rising to about 1,300 m, 1.5 nautical miles (2.8 km) southeast of Christoph Nunatak in the Lyon Nunataks, Ellsworth Land. Mapped by United States Geological Survey (USGS) from surveys and U.S. Navy aerial photographs, 1961-68, and Landsat imagery, 1973-74. Named by Advisory Committee on Antarctic Names (US-ACAN) in 1987 after Steven W. Isakson of Stanford University, Stanford, CA, upper atmospheric physicist at Siple Station, winter party 1975.

Mount Isbell
Mount Isbell (-82.36667°N, 156.4°W) is a mountain, 2360 m, at the northeast perimeter of Geologists Range, Churchill Mountains. The summit is 2.6 nautical miles (4.8 km) west of Vogt Peak. Named by Advisory Committee on Antarctic Names (US-ACAN) after John Isbell, Department of Geosciences, University of Wisconsin, Milwaukee; investigator of Permian and Lower Triassic strata of the Darwin and Churchill Mountains in several field seasons, 1992-2001, including work near this mountain.

Isbrecht Glacier
Isbrecht Glacier (-72.23333°N, -100.76667°W) is a small glacier flowing south from Thurston Island between Cox and Hale Glaciers. Named by Advisory Committee on Antarctic Names (US-ACAN) after JoAnn Isbrecht, United States Geological Survey (USGS), Flagstaff, Arizona, satellite image processing specialist, and part of the USGS team that compiled the 1:5,000,000-scale Advanced Very High Resolution Radiometer maps of Antarctica and the 1: 250,000-scale Landsat TM image maps of the Siple Coast area in the 1990s.

Isbrynet Hill
Isbrynet Hill (-73.15°N, -4.46667°W) is a rock hill southwest of Penck Ledge, rising above the ice slopes at the west side of the head of Penck Trough in Queen Maud Land. Mapped by Norwegian cartographers from surveys and air photos by Norwegian-British-Swedish Antarctic Expedition (NBSAE) (1949-52) and additional air photos (1958-59), and named Isbrynet (the ice rim).

Isca Valley
Isca Valley (-80.01667°N, 155.53333°W) is a narrow ice-free valley lying next west of Ituna Valley and 2 nautical miles (3.7 km) east-northeast of Haven Mountain in Britannia Range. Named in association with Britannia by a University of Waikato (N.Z.) geological party, 1978-79, led by M.J. Selby. Isca is a historical name used in Roman Britain for the River Exe.

Isdalen Valley
Isdalen Valley (-71.73333°N, 12.5°W) is an ice-filled valley between Aurdalsegga and Isdalsegga Ridges in Sudliche Petermann Range, Wohlthat Mountains. Discovered and plotted from air photos by German Antarctic Expedition, 1938-39. Replotted from air photos and surveys by Norwegian Antarctic Expedition, 1956-60, and named Isdalen (the ice valley).

Isdalsegga Ridge
Isdalsegga Ridge (-71.75°N, 12.55°W) is a rock ridge surmounted by Pinegin Peak, forming the east wall of Isdalen Valley in Sudliche Petermann Range, Wohlthat Mountains. Discovered and plotted from air photos by German Antarctic Expedition, 1938-39. Replotted from air photos and surveys by Norwegian Antarctic Expedition, 1956-60, and named Isdalsegga (the ice valley ridge).

Iselin Bank
Iselin Bank (-72.5°N, -179°W) is an iselin Bank	SPRU	-723000	-1790000	A bank in the Ross Sea. Name approved 4/80 (ACUF 201).

Iselin Seamount
Iselin Seamount (-70.75°N, -178.25°W) is a seamount named for the research ship Iselin II of the Woods Hole Oceanographic Institute. Name approved 2/64 (ACUF 23).

Isfossnipa Peak
Isfossnipa Peak (-73.15°N, -1.5°W) is a peak 2 nautical miles (3.7 km) southeast of Austvorren Ridge, surmounting the east part of Neumayer Cliffs in Queen Maud Land. Photographed from the air by the German Antarctic Expedition (1938-39). Mapped by Norwegian cartographers from surveys and air photos by Norwegian-British-Swedish Antarctic Expedition (NBSAE) (1949-52) and air photos by the Norwegian expedition (1958-59) and named Isfossnipa (the icefall peak).

Mount Isherwood
Mount Isherwood (-74.98333°N, -113.71667°W) is a flattish, mainly ice-covered mountain with steep rock slopes, located 4 nautical miles (7 km) west-southwest of Mount Strange in the Kohler Range of Marie Byrd Land. The mountain was first photographed from aircraft of U.S. Navy Operation Highjump in January 1947. Named by Advisory Committee on Antarctic Names (US-ACAN) for William F. Isherwood, geophysicist on the United States Antarctic Research Program (USARP) South Pole-Queen Maud Land Traverse II, 1965-66, and on the Marie Byrd Land Survey 1966-67.

Ishmael Peak
Ishmael Peak (-65.88333°N, -62.41667°W) is a conspicuous detached rock peak, 4 nautical miles (7 km) south of Spouter Peak, which marks the north side of the mouth of Leppard Glacier, on the east coast of Graham Land. Surveyed by Falkland Islands Dependencies Survey (FIDS) in 1947 and 1955. Named by United Kingdom Antarctic Place-Names Committee (UK-APC) after the narrator of Herman Melville's story Moby Dick.

Ising Glacier
Ising Glacier (-72.4°N, 0.95°W) is a glacier flowing northwest between Isingen Mountain and Kvitkjolen Ridge in the Sverdrup Mountains, Queen Maud Land. Photographed from the air by the German Antarctic Expedition (1938-39). Mapped by Norwegian cartographers from surveys and air photos by Norwegian-British-Swedish Antarctic Expedition (NBSAE) (1949-52) and air photos by the Norwegian expedition (1958-59) and named Isingbreen (the icing glacier).

Isingen Mountain
Isingen Mountain (-72.38333°N, 1.06667°W) is a large icecapped mass, through which protrude several rock peaks, between Ising Glacier and Rogstad Glacier in the Sverdrup Mountains, Queen Maud Land. Photographed from the air by the German Antarctic Expedition (1938 39). Mapped by Norwegian cartographers from surveys and air photos by Norwegian-British-Swedish Antarctic Expedition (NBSAE) (1949-52) and air photos by the Norwegian expedition (1958-59) and named Isingen (the icing).

Isingsalen Saddle
Isingsalen Saddle (-72.33333°N, 1.03333°W) is an ice saddle between Isingen Mountain and Salknappen Peak in the Sverdrup Mountains, Queen Maud Land. Photographed from the air by the German Antarctic Expedition (1938-39). Mapped by Norwegian cartographers from surveys and air photos by Norwegian-British-Swedish Antarctic Expedition (NBSAE) (1949-52) and air photos by the Norwegian expedition (1958-59) and named Isingsalen (the icing saddle).

Isingufsa Bluff
Isingufsa Bluff (-72.35°N, 1.21667°W) is a rock bluff forming the northeast corner of Isingen Mountain in the Sverdrup Mountains, Queen Maud Land. Photographed from the air by the German Antarctic Expedition (1938-39). Mapped by Norwegian cartographers from surveys and air photos by Norwegian-British-Swedish Antarctic Expedition (NBSAE) (1949-52) and air photos by the Norwegian expedition (1958-59) and named Isingufsa (the icing bluff).

Isklakken Hill
Isklakken Hill (-71.93333°N, 27.43333°W) is a rocky hill 2 nautical miles (3.7 km) east of Balchen Mountain at the east end of the Sor Rondane Mountains. Mapped by Norwegian cartographers in 1957 from air photos taken by U.S. Navy Operation Highjump, 1946-47, and named Isklakken (the ice lump).

Iskollen Hill
Iskollen Hill (-72.85°N, -4.15°W) is a broad, snow-covered hill with a few rock outcrops at the summit, lying southwest of Raudberg Valley in the southwest part of the Borg Massif, Queen Maud Land. Mapped by Norwegian cartographers from surveys and air photos by Norwegian-British-Swedish Antarctic Expedition (NBSAE) (1949-52) and named Iskollen (the ice hill).

Iskur Glacier
Iskur Glacier (-62.63333°N, -59.98333°W) is a glacier flowing north into Bruix Cove, Moon Bay, in east Livingston Island. Named by the Bulgarian Antarctic Place-names Commission, 2002, after the Iskur River in Bulgaria.

Island Arena
Island Arena (-79.81667°N, 156.58333°W) is a broad valley occupied by a lateral lobe of the Darwin Glacier, indenting the north side of the Darwin Mountains between Colosseum Ridge and Kenneth Ridge. An islandlike nunatak, Richardson Hill, rises above the ice of the valley. The descriptive name was given by the Victoria University of Wellington Antarctic Expedition (VUWAE) (1962-63). == See also == * List of antarctic and sub-antarctic islands

Island Lake
Island Lake (-77.63333°N, 166.43333°W) is a lake lying southeast of Skua Lake at Cape Evans, Ross Island. It appears that the descriptive name was given by members of the British Antarctic Expedition (1910-13), who built their winter quarters hut at Cape Evans. == See also == * List of antarctic and sub-antarctic islands

Islands Point
Islands Point (-71.46667°N, 169.51667°W) is a high rock point separating Berg Bay and Relay Bay, lying along the west shore of Robertson Bay in Victoria Land. Charted by the Northern Party of British Antarctic Expedition, 1910-13, under Captain Robert Scott. Probably named with reference to the small island (Sphinx Rock) which lies just north of the point. == See also == * List of antarctic and sub-antarctic islands

Islay
Islay (-67.35°N, 59.7°W) is an island 2 nautical miles (3.7 km) long, lying 1.5 nautical miles (2.8 km) north of Bertha Island in the William Scoresby Archipelago. Discovered in February 1936 by DI personnel on the William Scoresby, who probably named it for an island of that name in the Hebrides.

Bay of Isles
Bay of Isles (-54.03333°N, -37.33333°W) is a bay 9 nautical miles (17 km) wide and receding 3 nautical miles (6 km), lying between Capes Buller and Wilson along the north coast of South Georgia. Discovered in 1775 by a British expedition under Cook and so named by him because numerous islands lie in the bay.

Islet Point
Islet Point (-54.23333°N, -36.63333°W) is a point forming the east side of the entrance to Carlita Bay, Cumberland West Bay, on the north coast of South Georgia. The name appears to be first used on a 1929 British Admiralty chart and probably derives from the islet just off the point.

Isocline Hill
Isocline Hill (-83.51667°N, 157.6°W) is a hill in the south part of Augen Bluffs, Miller Range. The hill rises 100-200 m above the west side of Marsh Glacier and is connected to Augen Bluffs by a col 10-20 m lower than the height of the hill. So named by the Ohio State University Geological Party, 1967-68, because an isoclinal fold is well exposed on the side of the hill.

Isolation Point
Isolation Point (-78.18333°N, 167.5°W) is a small volcanic peak projecting through the ice sheet covering the southeast extremity of White Island, in the Ross Archipelago. So named because of its remote position by the New Zealand Geological Survey Antarctic Expedition (NZGSAE), 1958-59.

Isrosene Nunataks
Isrosene Nunataks (-71.88333°N, 26.58333°W) is a two nunataks 6 nautical miles (11 km) west-northwest of Balchen Mountain, protruding through the west part of Byrdbreen in the Sor Rondane Mountains. Mapped by Norwegian cartographers in 1957 from air photos taken by U.S. Navy Operation Highjump, 1946-47, and named Isrosene (the ice roses).

Istind Peak
Istind Peak (-72.1°N, -2.38333°W) is a partly ice-covered peak 1 nautical mile (1.9 km) south of Tindeklypa, on the east side of Ahlmann Ridge in Queen Maud Land. Photographed from the air by the German Antarctic Expedition (1938-39). Mapped by Norwegian cartographers from air photos by Norwegian-British-Swedish Antarctic Expedition (NBSAE) (1949-52) and air photos by the Norwegian expedition (1958-59) and named Istind (ice peak).

Istindhalsen Saddle
Istindhalsen Saddle (-72.08333°N, -2.56667°W) is an ice saddle between Istind Peak and Grunehogna Peaks in the Ahlmann Ridge of Queen Maud Land. Mapped by Norwegian cartographers from surveys and air photos by Norwegian-British-Swedish Antarctic Expedition (NBSAE) (1949-52) and air photos by the Norwegian expedition (1958-39) and named Istindhalsen (the ice peak neck).

Italia Valley
Italia Valley (-62.16667°N, -58.51667°W) is a small valley lying east-northeast of Herve Cove, Ezcurra Inlet, King George Island, in the South Shetland Islands. The feature was named "Conca Italia" (Italia hollow) and used as the site of its base hut by the first Italian expedition to Antarctica, 1975-76, led by Rennato Cepparo. The name has been approved with an English generic term.

Ituna Valley
Ituna Valley (-80°N, 155.75°W) is a narrow ice-free valley between Isca Valley and Lemanis Valley in the Britannia Range. The valley opens northward to Hatherton Glacier, 8 nautical miles (15 km) west-northwest of Derrick Peak. Named in association with Britannia by a University of Waikato (N.Z.) geological party, 1978-79, led by M.J. Selby. Ituna is a historical name used in Roman Britain for the River Eden.

Ivanoff Head
Ivanoff Head (-66.88333°N, 109.11667°W) is a small rocky headland, or probable island, which lies along the coast and is partly overlain by continental ice, situated 4 nautical miles (7 km) west of Hatch Islands at the head of Vincennes Bay. The feature was first mapped from aerial photographs taken by U.S. Navy Operation Highjump, 1946-47, and was named Brooks Island by Advisory Committee on Antarctic Names (US-ACAN) in 1956. the name Ivanoff Head, inadvertently applied by Australia in 1961, has succeeded the earlier name in general use and is now recommended. Helicopter landings were made here by ANARE (Australian National Antarctic Research Expeditions) from the Magga Dan in February 1960. The feature was used as a rescue base when a helicopter crashed nearby. Named after Captain P. Ivanoff pilot of the crashed helicopter.

Mount Iveagh
Mount Iveagh (-85.06667°N, 169.63333°W) is a broad mountain in the Supporters Range, overlooking the east side of Mill Glacier 5 nautical miles (9 km) northwest of Mount White. Discovered by the British Antarctic Expedition (1907-09) and named for Lord Iveagh, of the firm of Guinness, who helped finance the expedition.

Iversen Peak
Iversen Peak (-84.61667°N, -111.43333°W) is a peak 3 nautical miles (6 km) east-northeast of Urbanak Peak at the northeast end of the Ohio Range, Horlick Mountains. Surveyed by the United States Antarctic Research Program (USARP) Horlick Mountains Traverse party in December 1958. Named by Advisory Committee on Antarctic Names (US-ACAN) for Frede Iversen, ionospheric physicist at Byrd Station in 1960.

Ives Bank
Ives Bank (-67.66667°N, -68.2°W) is a marine bank with a least depth of 11 m in the southern approaches to Ryder Bay, Adelaide Island, 1 nautical mile (1.9 km) south of Mikkelsen Islands. Named by United Kingdom Antarctic Place-Names Committee (UK-APC) after Lieutenant Commander David M. Ives, Royal Navy, who surveyed this bank from HMS Endurance in March 1981.

Ives Ice Rise
Ives Ice Rise (-71.88333°N, -73.58333°W) is an ice rise about 1 nautical mile (1.9 km) long at the head of Weber Inlet, southwest Alexander Island. Mapped by United States Geological Survey (USGS) from U.S. Navy aerial photographs taken 1967-68 and Landsat imagery taken 1972-73. In association with the names of composers grouped in this area, named by Advisory Committee on Antarctic Names (US-ACAN) after Charles E. Ives (1874-1954), American composer.

Ives Tongue
Ives Tongue (-67.36667°N, 59.48333°W) is a narrow tongue of land projecting from an island between Fold Island and the coast of Enderby Land. Discovered and named in February 1936 by the William Scoresby expedition.

Ivory Pinnacles
Ivory Pinnacles (-63.83333°N, -59.15°W) is a two ice-covered peaks (1,120 m) on the west side of Pettus Glacier, 9 nautical miles (17 km) southeast of Cape Kjellman, in northern Graham Land. Charted in 1948 by members of the Falkland Islands Dependencies Survey (FIDS) who applied the descriptive name.

Ivory Tower
Ivory Tower (-85.46667°N, -142.4°W) is a small peak rising to about 800 m, 1.5 nautical miles (2.8 km) east of Fadden Peak, between Harold Byrd Mountains and Bender Mountains. The peak was visited by a United States Antarctic Research Program (USARP)-Arizona State University geological party, 1977-78, and so named from its composition of nearly all white marble.

Mount Izabelle
Mount Izabelle (-72.16667°N, 66.5°W) is a bare rock mountain standing 12 nautical miles (22 km) southwest of Shaw Massif in the Prince Charles Mountains. Discovered from an ANARE (Australian National Antarctic Research Expeditions) Beaver aircraft on November 28, 1956, while engaged in aerial photography. Named by Antarctic Names Committee of Australia (ANCA) for B. Izabelle, weather observer at Mawson Station in 1957.