[1] Download coordinates as: Hughes Basin is a large circular feature in the southwest of the Britannia Range to the south of Mount Henderson.

A relatively level benchlike feature which rises to 1,800 metres (5,900 ft) high, 6 nautical miles (11 km; 6.9 mi) southwest of Mount Olympus in Hughes Basin.

The location of the ledge is in proximity to Byrd Glacier, Mount Olympus, and other features that memorialize leaders and ships of Operation High Jump.

A prominent nunatak, 1,405 metres (4,610 ft) high, standing 4 nautical miles (7.4 km; 4.6 mi) northwest of Mount Rummage.

Named by US-ACAN for Chief Aviation Machinist's Mate Shepard L. Darnell, a member of United States Navy Squadron VX-6.