Clapp Ridge . A narrow, steep-sided ridge about long, forming the north wall of Hand Glacier. Mapped by the
United States Geological Survey (USGS) from surveys and
United States Navy air photos, 1960-64. Named by the United States
Advisory Committee on Antarctic Names (US-ACAN) for James L. Clapp, member of the United States ArmyRP glaciological party to Roosevelt Island, 1967-68.
Stever Ridge . Irregular ridge stretching southeast from Mount Riddolls to the confluence of Behr Glacier and Borchgrevink Glacier. Named by US-ACAN for H. Guyford Stever, Director of the
National Science Foundation, 1972-74, which has overall administrative responsibility for the
United States Antarctic Research Program (USARP). He traveled and worked in Antarctica on two occasions, 1973 and 1975.
Mount Lopatin . A mountain high situated east-southeast of Mount Riddolls. Mapped by USGS from surveys and United States Navy air photos, 1960-64. Named by US-ACAN for Boris Lopatin, Soviet exchange scientist at McMurdo Station, 1968.
Mount Frosch . A mainly snow-covered mountain high standing northeast of Mount Riddolls at the head of Borchgrevink Glacier. Mapped by the USGS from surveys and United States Navy aerial photographs, 1960-62. Named by US-ACAN for Robert A. Frosch, Assistant Secretary of the Navy for Research and Development, 1971-72; Administrator, National Aeronautics and Space Administration 1978.
Hackerman Ridge . A large mountainous ridge trending north–south between the Gruendler and Rudolph Glaciers. Named by US-ACAN for Norman Hackerman, member of National Science Board, 1968-78; Chairman since 1974. He visited Antarctica in 1975 and 1977 as part of his official duties in support of the United States scientific program in Antarctica.
Mount Randall . A mountain rising to high at the south end of Hackerman Ridge. The mountain, which forms the summit area in this part of the ridge, is west of Mount Riddolls and northeast of
Mount Burrill, with which this name is associated. Named by the US-ACAN in 1994 after Richard R. Randall, geographer and cartographer, Executive Secretary, United States Board on Geographic Names, 1973-93, whose office included responsibility for geographic nomenclature in Antarctica. Succeeding Meredith F. Burrill as Executive Secretary, Randall combined with Burrill to direct a half-century of American geographic names research. ==References==