Turnstile Ridge (79°50′S 154°36′E) is a ridge about 9 nautical miles (17 km) long, lying 3 nautical miles (6 km) north of Westhaven Nunatak at the northwest extremity of Britannia Range. So named by the Darwin Glacier Party (1957) of the Commonwealth Trans-Antarctic Expedition because snow passages resembling turnstiles occur throughout its length.
This article incorporates public domain material from the United States Geological Survey document "Turnstile Ridge" (content from the Geographic Names Information System).
References
Turnstile Ridge Wikipedia(Text) CC BY-SA