Cape Northumberland (South Australia)

Cape Northumberland is a headland in the southeast of the Australian state of South Australia. It is the southernmost point of South Australia. It is located about 3 km from the town of Port MacDonnell, 28 kilometres south southwest from the municipal seat of Mount Gambier and about 393 km southeast of the state's capital Adelaide.

History
Cape Northumberland was named by the Royal Navy officer, James Grant, on 3 December 1800, when he was mapping the southern coast of Australia in his early-19th century expedition. The headland was named after Hugh Percy, Duke of Northumberland. The cape is near the site of the historic Cape Northumberland Lighthouse, built in 1887. A new lighthouse has been constructed about 700 m north of Cape Northumberland.

Geography
The cape is located on the southeast coast of South Australia. It is the western end of Discovery Bay and its subsidiary, MacDonnell Bay. The cape was described in 2017 in an American source as being "about 30 m high, is rugged and cliffy, with a hill rising to an elevation of 41 m behind it.  It is the southernmost point on the South Australian coastline.

Climate