Koski Glacier is an east-flowing glacier

Glacier

A glacier is a large persistent body of ice that forms where the accumulation of snow exceeds its ablation over many years, often centuries. At least 0.1 km² in area and 50 m thick, but often much larger, a glacier slowly deforms and flows due to stresses induced by its weight...

, 7 nautical miles (13 km) long, draining the east-central portion of the Dominion Range

Dominion Range

The Dominion Range is a broad mountain range, about long, forming a prominent salient at the juncture of the Beardmore and Mill glaciers in Antarctica. The range is part of the Queen Maud Mountains...

 icecap. The glacier lies close north of Vandament Glacier

Vandament Glacier

Vandament Glacier is an east-flowing glacier, 6 nautical miles long, draining the east-central portion of the Dominion Range icecap. The glacier lies close south of Koski Glacier, whose flow it parallels, and terminates 2 nautical miles northwest of Safety Spur. It was named by the Advisory...

, whose flow it parallels, and terminates at Mill Glacier

Mill Glacier

Mill Glacier is a tributary glacier, 16 km wide, flowing northwest between the Dominion Range and the Supporters Range into Beardmore Glacier. Discovered by the British Antarctic Expedition and named for Hugh Robert Mill, British geographer and Antarctic historian.-See also:* List of glaciers in...

 just southeast of Browns Butte

Browns Butte

Browns Butte is a bare rock butte at the north side of the mouth of Koski Glacier in the Dominion Range. It was named by the Advisory Committee on Antarctic Names for Craig W. Brown, United States Antarctic Research Program meteorologist at South Pole Station, 1963....

. 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 Raymond J. Koski, United States Antarctic Research Program (USARP) engineer on several traverses originating at the South Pole Station 1962-63, 1963–64 and 1964-65.