Darnell Nunatak is a prominent nunatak

Nunatak

A nunatak is an exposed, often rocky element of a ridge, mountain, or peak not covered with ice or snow within an ice field or glacier. The term is typically used in areas where a permanent ice sheet is present...

, 1,405 m, standing 4 nautical miles (7 km) northwest of Mount Rummage

Mount Rummage

Mount Rummage is a conical, bare rock mountain, 1,510 m, at the west side of Ramseier Glacier. It is the westernmost mountain along the north wall of Byrd Glacier. Named by Advisory Committee on Antarctic Names for Chief Laurence A. Rummage, QMCM, U.S. Navy, who took part in Christchurch...

 in the southwest part of Britannia Range. Named by Advisory Committee on Antarctic Names

Advisory Committee on Antarctic Names

The Advisory Committee on Antarctic Names is an advisory committee of the United States Board on Geographic Names responsible for recommending names for features in Antarctica...

 (US-ACAN) for Chief Aviation Machinist's Mate Shepard L. Darnell, a member of U.S. Navy Squadron VX-6

VX-6

Air Development Squadron Six was a United States Navy Air Development Squadron based at McMurdo Station, Antarctica...

. During the period December 27, 1962-January 4, 1963, Chief Darnell and six mechanics replaced in the field the engine of a helicopter downed on Emmanuel Glacier

Emmanuel Glacier

Emmanuel Glacier is a glacier in the Royal Society Range of Victoria Land, descending from Mount Lister northwestward between Table Mountain and Cathedral Rocks to enter Ferrar Glacier. Named by the British Antarctic Expedition after Emmanuel College, Cambridge, England....

.