It is west of the head of the Hatherton Glacier, which forms the boundary between the Darwin Mountains and the Britannia Range, The Westhaven Nunatak is southwest of Turnstile Ridge.

[2] Many of the nearby features were named in association with Britannia by a University of Waikato (New Zealand) geological party, 1978-79, led by M.J.

A prominent nunatak, 2,240 metres (7,350 ft) high, standing 3 nautical miles (5.6 km; 3.5 mi) south of Turnstile Ridge in the northwest part of Britannia Range.

A prominent mountain, 2,470 metres (8,100 ft) high, with a level razor-back snow ridge at its highest (eastern) part, standing 2 nautical miles (3.7 km; 2.3 mi) northeast of Three Nunataks.

So named by the Darwin Glacier Party of the CTAE (1956-58), who sheltered for five days in the largely snow-free area below the north side of the summit ridge.

Three nunataks, largely ice covered, lying 2 nautical miles (3.7 km; 2.3 mi) southwest of Haven Mountain at the northwest edge of the Britannia Range.

An ice-free valley 3 nautical miles (5.6 km; 3.5 mi) southeast of Turnstile Ridge.

A rock ridge that rises over 2,000 metres (6,600 ft) high and extends from Banna Peak northeast toward the head of Hatherton Glacier.

Ice-free valley bounded eastward by Danum Platform, lying 6 nautical miles (11 km; 6.9 mi) northeast of Haven Mountain.

The valley opens northward to Hatherton Glacier, 8 nautical miles (15 km; 9.2 mi) west-northwest of Derrick Peak.

[17] This article incorporates public domain material from websites or documents of the United States Geological Survey.