A rectangular, flat, ice-covered mountain over 2,400 metres (7,900 ft) high, standing 5 nautical miles (9.3 km; 5.8 mi) east of Mount Henderson.

A mainly ice-free ridge, extending 7 nautical miles (13 km; 8.1 mi) north from Mount Olympus toward the south side of Hatherton Glacier.

Named "Dusky Mountains" by the Darwin Glacier Party of the Commonwealth Trans-Antarctic Expedition (CTAE) (1956-58) because of the lack of snow on its slopes.

The name was amended to Dusky Ridge following remapping of the feature by the USGS from surveys and United States Navy air photos, 1960-62.

A ridge about 7 nautical miles (13 km; 8.1 mi) long in the Britannia Range, extending north from Mount McClintock along the east side of Hinton Glacier.

Named by the US-ACAN for Robert B. Forbes of the University of Alaska, who made geological studies in the McMurdo Sound area with United States Navy Operation Deep Freeze, 1955-56, and during the summer season, 1962-63.

Named by US-ACAN after M. John Berry, Assistant Secretary for Policy, Management and Budget, United States Department of the Interior, 1997-2000.

Named by US-ACAN in association with HMS Britannia after Dartmouth, a seaport of Devonshire, England, on the west bank of the River Dart estuary.

A massive flat ridge about 3,200 metres (10,500 ft) high that is ice covered and steep sided, located 4 nautical miles (7.4 km; 4.6 mi) east of Mount McClintock.

Named by US-ACAN in association with Byrd Glacier and Sennet Glacier, after Commander Joseph B. Icenhower, United States Navy, captain of USS Sennet, a submarine (Central Group of Task Force 68) of United States Navy Operation Highjump, 1946-47, led by Admiral Richard Byrd.