Clapp Ridge is a narrow, steep-sided ridge about 9 miles (14.5 km) long, forming the north wall of Hand Glacier in the Victory Mountains

Victory Mountains

The Victory Mountains is a major group of mountains in Victoria Land, Antarctica, about long and wide, which is bounded primarily by Mariner and Tucker glaciers and the Ross Sea...

, Victoria Land

Victoria Land

Victoria Land is a region of Antarctica bounded on the east by the Ross Ice Shelf and the Ross Sea and on the west by Oates Land and Wilkes Land. It was discovered by Captain James Clark Ross in January 1841 and named after the UK's Queen Victoria...

. It was mapped by the 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,...

 from surveys and from U.S. Navy air photos, 1960–64, and named by 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...

 for James L. Clapp, a member of the United States Antarctic Research Program glaciological party to Roosevelt Island

Roosevelt Island, Antarctica

Roosevelt Island is an ice-covered island, about long in a NW-SE direction, wide and about in area, lying in the eastern part of the Ross Ice Shelf of Antarctica...

, 1967–68.