Olsen Crags is a rugged crags surmounting a small but conspicuous 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...

 block that projects into the east side of Amundsen Glacier

Amundsen Glacier

Amundsen Glacier is a major Antarctic glacier, about 6 to 10 km wide and 128 km long, originating on the polar plateau where it drains the area to the south and west of Nilsen Plateau, and descending through the Queen Maud Mountains to enter the Ross Ice Shelf just west of the...

 just north of Epler Glacier

Epler Glacier

Epler Glacier is a tributary glacier, 10 nautical miles long, draining west from Nilsen Plateau in Queen Maud Mountains to enter Amundsen Glacier just south of Olsen Crags. Mapped by United States Geological Survey from surveys and U.S. Navy air photos, 1960-64. Named by Advisory Committee on...

, in the Queen Maud Mountains

Queen Maud Mountains

The Queen Maud Mountains are a major group of mountains, ranges and subordinate features of the Transantarctic Mountains, lying between the Beardmore and Reedy Glaciers and including the area from the head of the Ross Ice Shelf to the polar plateau in Antarctica...

. 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 air photos, 1960-64. 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 Karinius Olsen, cook on the Fram, the ship of Amundsen's Norwegian expedition of 1910-12. This naming preserves the spirit of Amundsen's 1911 commemoration of "Mount K. Olsen," a name applied for an unidentifiable mountain in the general area.