The Amphitheatre is a large bowl-shaped depression, 0.75 nautical miles (1.4 km) in diameter, at the south side of the head of Northeast Glacier

Northeast Glacier

Northeast Glacier is a steep, heavily crevassed glacier, 13 miles long and 5 miles wide at its mouth, which flows from McLeod Hill westward and then southwestwards into Marguerite Bay between the Debenham Islands and Roman Four Promontory, on the west coast of Graham Land...

 on Graham Land

Graham Land

Graham Land is that portion of the Antarctic Peninsula which lies north of a line joining Cape Jeremy and Cape Agassiz. This description of Graham Land is consistent with the 1964 agreement between the British Antarctic Place-names Committee and the US Advisory Committee on Antarctic Names, in...

. The feature lies adjacent to former bases of the British Graham Land Expedition

British Graham Land Expedition

A British expedition to Graham Land led by John Lachlan Cope took place between 1920 and 1922. The British Graham Land Expedition was a geophysical and exploration expedition to Graham Land in Antarctica between 1934 to 1937. Under the leadership of John Riddoch Rymill, the expedition spent two...

 (BGLE), 1934–37, and the United States Antarctic Service (USAS), 1939–41, and was charted by USAS sledging parties which crossed Graham Land via Northeast Glacier and Bills Gulch

Bills Gulch

Bills Gulch is the northern of two glaciers flowing east from the plateau upland into the head of Trail Inlet, on the east coast of Graham Land. This glacier was used by the sledge party under Paul H. Knowles which traversed the Antarctic Peninsula from the East Base of the United States Antarctic...

. Named by the Falkland Islands Dependencies Survey (FIDS) following its survey in 1946.