Newcomer Glacier is a glacier

Glacier

A glacier is a large persistent body of ice that forms where the accumulation of snow exceeds its ablation over many years, often centuries. At least 0.1 km² in area and 50 m thick, but often much larger, a glacier slowly deforms and flows due to stresses induced by its weight...

 20 nautical miles (37 km) long transecting the north part of the Sentinel Range

Sentinel Range

The Sentinel Range is a major mountain range situated northward of Minnesota Glacier and forming the northern half of the Ellsworth Mountains in Antarctica. The range trends NNW-SSE for about and is 24 to 48 km wide...

, flowing southeast from the vicinity of Allen Peak

Allen Peak

Allen Peak is a peak in Antarctica, standing west of Mount Wyatt Earp and forming the northern extremity of the main ridge of the Sentinel Range. It was discovered by Lincoln Ellsworth on his trans-Antarctic flight of 23 November 1935, and named by the Advisory Committee on Antarctic Names after...

 and then east to where it leaves the range north of Bracken Peak

Bracken Peak

Bracken Peak is a peak, high, standing south of the terminus of Newcomer Glacier and northeast of Mount Malone, on the east side of the Sentinel Range, Ellsworth Mountains. It was first mapped by the United States Geological Survey from surveys and from air photos taken by U.S...

. 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 Commander Loyd E. Newcomer of U.S. Navy Squadron VX-6

VX-6

Air Development Squadron Six was a United States Navy Air Development Squadron based at McMurdo Station, Antarctica...

, pilot on photographic flights over the range on December 14–15, 1959.