Allegheny Mountains (Antarctica)

The Allegheny Mountains (-77.25°N, -143.3°W) are a small group of mountains 10 nmi west of the Clark Mountains in the Ford Ranges of Marie Byrd Land, Antarctica.

Location
The Allegheny Mountains are north of the upper Boyd Glacier and the Mackay Mountains, east of the Sarnoff Mountains and west of the Clark Mountains. Features, from west to east, include Mount Darling, Mount Spencer, Mount Tolley, Mount Swartley, Mount Zeigler and Cady Nunatak. Isolated features to the north and east include the Mathis Nunataks, Spaulding Rocks and Breeding Nunatak.

Discovery and name
The Allegheny Mountains were discovered on aerial exploration flights in 1934 by the Byrd Antarctic Expedition (ByrdAE) and subsequently mapped from aerial flights and ground surveys by the United States Antarctic Service (USAS) from 1939 to 1941. They were named by the USAS for Allegheny College, Meadville, Pennsylvania which is the alma mater of Paul Siple, leader of the United States Antarctic Service West Base.

Mount Darling
-77.25°N, -143.33333°W. The highest peak of the Allegheny Mountains, standing 1 nmi west of Mount Swartley. Discovered on aerial flights from the West Base of USAS in 1940. Named for Professor Chester A. Darling of Allegheny College.

Mount Spencer
-77.28333°N, -143.33333°W. A peak 1 nmi south of Mount Darling. Discovered on aerial flights from West Base of the USAS (1939-41). Named for Herbert R. Spencer of Erie, Pennsylvania, the Sea Scout commander of Paul Siple, leader of the West Base party of that expedition.

Mount Tolley
-77.28333°N, -143.11667°W. A peak, 1,030 m high, standing 2 nmi south of Mount Swartley. Discovered on aerial flights from West Base of the USAS (1939-41). Named for president William P. Tolley of Allegheny College.

Mount Swartley
-77.25°N, -143.2°W. A peak 1 nmi east of Mount Darling. Discovered on aerial flights from West Base of the USAS (1939–41). Named for Professor Stanley Swartley of Allegheny College.

Mount Zeigler
-77.21667°N, -143.05°W. A mountain 1,120 m high 3 nmi north-northeast of Mount Swartley. Mapped by USAS (1939–41) and by the United States Geological Survey (USGS) from surveys and United States Navy air photos (1959-65). Named by the United States Advisory Committee on Antarctic Names (US-ACAN) for Lieutenant Commander Luther L. Zeigler, United States Navy, pilot on LC-130F Hercules aircraft flights during Operation Deep Freeze 1968.

Cady Nunatak
-77.21667°N, -142.85°W. A nunatak 3 nmi east of Mount Zeigler in the northeast  part of the Allegheny Mountains. Mapped by USGS from surveys and United States Navy air photos, 1959-65. Named by US-ACAN for Frederick M. Cady, United States Antarctic Research Program (USARP) ionospheric physicist at Byrd Station, 1968.

Mathis Nunataks
-77.13333°N, -143.45°W. An isolated cluster of nunataks near the head of Arthur Glacier, 8 nmi east-southeast of Mount Warner. Mapped by USAS (1939-41) and by USGS from surveys and United States Navy air photos (1959-65). Named by US-ACAN for Terry R. Mathis, traverse engineer with the Byrd Station glaciological strain network, summer season (1967-68), and station engineer with the Byrd Station winter party (1968).

Spaulding Rocks
-77°N, -143.26667°W. A somewhat isolated group of rocks lying 11 nmi northeast of Mount Warner. Mapped by USAS (1939-41) and by USGS from surveys and United States Navy air photos (1959-65). Named by US-ACAN for Howard R. Spauiding, United States Navy, builder at Byrd Station in 1966.

Breeding Nunatak
-77.06667°N, -142.46667°W. An isolated nunatak 10 nmi northeast of the Allegheny Mountains. Mapped by USGS from surveys and United States Navy air photos, 1959-65. Named by US-ACAN for George H. Breeding, storekeeper, United States Navy, of Byrd Station, 1967.