Mount Quackenbush is a flat-topped 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...

, 2,435 m, which forms a projecting angle along the steep cliffs bordering the north side of Byrd Glacier

Byrd Glacier

The Byrd Glacier is a major glacier in Antarctica, about 136 km long and 24 km wide, draining an extensive area of the polar plateau and flowing eastward between the Britannia Range and Churchill Mountains to discharge into the Ross Ice Shelf at Barne Inlet.Named by the NZ-APC after Rear...

, just west of Peckham Glacier

Peckham Glacier

Peckham Glacier is a steep tributary glacier in the Britannia Range, flowing south from Mount McClintock into Byrd Glacier. Named by Advisory Committee on Antarctic Names for Verne E. Peckham, biologist, McMurdo Station winter party 1962, who with use of SCUBA gear made numerous dives under the...

. It was 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...

 (US-ACAN) for Captain Robert S. Quackenbush, Jr., chief of staff to Admiral Cruzen (Central Group

Central Group

The Central Group of Companies is a family-owned conglomerate holding company in Thailand that is involved in retailing, real estate, hotels and restaurants...

 of Task Force

Task force

A task force is a unit or formation established to work on a single defined task or activity. Originally introduced by the United States Navy, the term has now caught on for general usage and is a standard part of NATO terminology...

 68) in U.S. Navy Operation Highjump, 1946-47, led by Admiral Byrd.