Cumpston Massif is a prominent, flat-topped rock outcrop

Outcrop

An outcrop is a visible exposure of bedrock or ancient superficial deposits on the surface of the Earth. -Features:Outcrops do not cover the majority of the Earth's land surface because in most places the bedrock or superficial deposits are covered by a mantle of soil and vegetation and cannot be...

, about 2070 metres (6,791.3 ft) high, 14.5 kilometres (9 mi) long and 10 kilometres (6.2 mi) km wide, at the junction of Lambert Glacier

Lambert Glacier

Lambert Glacier is a major glacier in East Antarctica. At about 60 miles wide, over 250 miles long, and about 2,500 meters deep, it holds the Guinness world record for the world's largest glacier...

 and Mellor Glacier

Mellor Glacier

Mellor Glacier is a tributary glacier, flowing northnortheast between Mount Newton and Mount Maguire and coalescing with Collins Glacier just prior to junction with Lambert Glacier at Patrick Point, in the Prince Charles Mountains, Antarctica. It was mapped from air photos taken by ANARE in 1956...

 in Mac. Robertson Land

Mac. Robertson Land

Mac. Robertson Land is the portion of Antarctica lying southward of the coast between William Scoresby Bay and Cape Darnley. Mac. Robertson Land is located at . In the east, Mac. Robertson Land includes the Prince Charles Mountains. Mac...

.

Discovery and naming

Cumpston Massif was discovered in November 1956, from an ANARE aircraft. Named for Dr J. S. Cumpston of the Australian Department of External Affairs who, along with E. P. Bayliss, was responsible for the map of Antarctic pub. in 1939 by the Property and Survey Branch, Department of the Interior, Canberra

Canberra

Canberra is the capital city of Australia. With a population of over 345,000, it is Australia's largest inland city and the eighth-largest city overall. The city is located at the northern end of the Australian Capital Territory , south-west of Sydney, and north-east of Melbourne...

.

See also

• East Antarctica Ranges
  East Antarctica Ranges
  The East Antarctica Ranges are one of the three largest mountain ranges in Antarctica, the others are the Transantarctic Mountains and West Antarctica Ranges. The East Antarctica Ranges, located on the East Antarctic Ice Sheet, have 29 known peaks whose summits reach or exceed 2000 meters above sea...
  
  
• East Antarctic two-thousanders
  East Antarctic two-thousanders
  The three largest mountain ranges in Antarctica are the Transantarctic Mountains, the West Antarctica Ranges, and the East Antarctica Ranges. The East Antarctica Ranges, located on the East Antarctic Ice Sheet, have 29 known peaks whose summits reach or exceed 2000 meters above sea level. These...
  
  
• History of Antarctica
  History of Antarctica
  The history of Antarctica emerges from early Western theories of a vast continent, known as Terra Australis, believed to exist in the far south of the globe...
  
  
• List of Antarctic expeditions

External links

• United States Geological Survey, Geographic Names Information System (GNIS)
• Scientific Committee on Antarctic Research (SCAR)