Mill Mountain is a large flat-topped mountain

Mountain

Image:Himalaya_annotated.jpg|thumb|right|The Himalayan mountain range with Mount Everestrect 58 14 160 49 Chomo Lonzorect 200 28 335 52 Makalurect 378 24 566 45 Mount Everestrect 188 581 920 656 Tibetan Plateaurect 250 406 340 427 Rong River...

 (2,730 m) forming the eastern end of Festive Plateau

Festive Plateau

Festive Plateau is an ice-covered plateau over 2,200 m, about 10 nautical miles long and 3 nautical miles wide, just north of Mount Longhurst in the Churchill Mountains. Named by two members of the Darwin Glacier Party of the Commonwealth Trans-Antarctic Expedition who spent Christmas Day 1957...

 in the Cook Mountains

Cook Mountains

The Cook Mountains is a group of mountains bounded by the Mulock and Darwin glaciers in Antarctica. Parts of the group were first viewed from the Ross Ice Shelf by the British National Antarctic Expedition...

. This mountain was probably sighted by the Discovery expedition (1901–04) under Captain Robert F. Scott, who gave the name "Mount Mill

Mount Mill

Mount Mill is a mountain, 735 m, standing 2 nautical miles west of Mount Balch on the northeast shore of Waddington Bay, on the west coast of Graham Land. First charted by the Belgian Antarctic Expedition, 1897-99...

," after British Antarctic historian Hugh Robert Mill

Hugh Robert Mill

Hugh Robert Mill was a Scottish geographer and meteorologist who was influential in the reform of geography teaching, and in the development of meteorology as a science. Educated in Scotland, he graduated from the University of Edinburgh in 1883...

, to a summit in nearby Reeves Bluffs

Reeves Bluffs

Reeves Bluffs is a line of east-facing rock bluffs, 8 nautical miles long, situated 15 nautical miles west of Cape Murray in the Cook Mountains. Discovered by the Discovery expedition under Captain Robert F. Scott, who gave the name "Mount Reeves," after Edward A. Reeves, Map Curator to the...

. This area was mapped by United States Geological Survey

United States Geological Survey

The United States Geological Survey is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The organization has four major science disciplines, concerning biology,...

 (USGS) from surveys and U.S. Navy photography (1959–63). A prominent mountain does not rise from the bluffs, and since the name Mount Mill is in use elsewhere in Antarctica, the 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) (1965) altered the original name to Mill Mountain and applied it to the prominent mountain described.