Grimes Ridge is a high, mostly ice-covered ridge at the north side of Holt Glacier

Holt Glacier

Holt Glacier is a broad glacier on Bear Peninsula that flows east to the sea between Grimes Ridge and Jones Bluffs, in Marie Byrd Land. First delineated by United States Geological Survey from air photos taken by U.S. Navy Operation Highjump in January 1947. Named by Advisory Committee on...

 on Bear Peninsula

Bear Peninsula

Bear Peninsula is a peninsula about 80 km long and 40 km wide which is ice covered except for several isolated rock bluffs and outcrops along its margins, lying 48 km 30 mi) east of Martin Peninsula on Walgreen Coast, Marie Byrd Land.First delineated from aerial photographs...

, Walgreen Coast

Walgreen Coast

The Walgreen Coast is a portion of the coast of Antarctica between Cape Herlacher and Cape Waite, or between Bakutis Coast in the west, and Eights Coast. It is the easternmost part of Marie Byrd Land. It stretches from 114°12'W to 103°24'W. Eights Coast to the east is already part of Ellsworth Land...

, in Marie Byrd Land

Marie Byrd Land

Marie Byrd Land is the portion of West Antarctica lying east of the Ross Ice Shelf and the Ross Sea and south of the Pacific Ocean, extending eastward approximately to a line between the head of the Ross Ice Shelf and Eights Coast. It stretches between 158°W and 103°24'W...

. First 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 air photos obtained by U.S. Navy Operation Highjump in January 1947. 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) after Captain E.W. Grimes, a member of the U.S. Army Aviation Detachment that provided Antarctic support during U.S. Navy Operation Deepfreeze 1966.