Hoffman Ledge is an arcuate flat-topped ridge, 1.8 nautical miles (3.3 km) long and 0.5 nautical miles (0.9 km) wide, located west of Dais Col

Dais Col

Dais Col is an ice-free col at 600 m, connecting the east edge of the Labyrinth and the west edge of the Dais, in Wright Valley, Victoria Land. Named by Advisory Committee on Antarctic Names in association with the Dais....

 in the Labyrinth of Wright Valley

Wright Valley

The Wright Valley is the central one of the three large Dry Valleys in the Transantarctic Mountains, located west of McMurdo Sound at approximately . Wright Valley contains the Onyx River, the largest river in Antarctica, Lake Brownworth, the origin of Onyx River, and Lake Vanda, which is fed by...

, McMurdo Dry Valleys

McMurdo Dry Valleys

The McMurdo Dry Valleys are a row of snow-free valleys in Antarctica located within Victoria Land west of McMurdo Sound. The region is one of the world's most extreme deserts, and includes many interesting features including Lake Vida and the Onyx River, Antarctica's longest river.-Climate:The Dry...

. The relatively level ledge rises to 1000 m and is bounded west and north by Healy Trough

Healy Trough

Healy Trough is a primary elongate trough in the Labyrinth of Wright Valley, McMurdo Dry Valleys, extending diagonally SW-NE across the east part of the feature. Named by Advisory Committee on Antarctic Names after Terry R...

; cliffs and slopes bordering the ledge rise from 50 to over 100 m above the trough. 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 J.H. (Jack) Hoffman of the Geophysics Division, DSIR, superintendent of the New Zealand

New Zealand

New Zealand is an island country in the south-western Pacific Ocean comprising two main landmasses and numerous smaller islands. The country is situated some east of Australia across the Tasman Sea, and roughly south of the Pacific island nations of New Caledonia, Fiji, and Tonga...

 drilling team engaged in the McMurdo Dry Valleys Drilling Project, 1973-76.