Located in Marie Byrd Land, 64 km (40 mi) east of the Ames Range, with Wallace Rock as its southeast extremity.

The feature was observed from aircraft of the U.S. Antarctic Service (USAS) in Flight G, Dec. 15, 1940, and was briefly referred to as "Mount Gray".

Flint, Jr., U.S. Antarctic Research Program (USARP) scientist on high latitude geophysical and geomagnetic phenomena.

Named by US-ACAN for Lieutenant Thomas L. Gillick, U.S. Navy Reserve, helicopter pilot who flew close support for United States Antarctic Research Program (USARP) scientists during Operation Deep Freeze 1970 and 1971.

Named by US-ACAN for Captain William S. Schwob, USCG, Commanding Officer of USCGC Southwind during Operation Deep Freeze 1972.