Kay Nunatak is a dark rocky nunatak

Nunatak

A nunatak is an exposed, often rocky element of a ridge, mountain, or peak not covered with ice or snow within an ice field or glacier. The term is typically used in areas where a permanent ice sheet is present...

 rising to 500 m, situated at the south side of Mobiloil Inlet

Mobiloil Inlet

Mobiloil Inlet is an ice-filled inlet, nurtured by several northeast and east flowing glaciers, lying between Rock Pile Peaks and Hollick-Kenyon Peninsula along the east coast of Antarctic Peninsula. Discovered by Sir Hubert Wilkins in a flight on December 20, 1928, and named by him after a...

 and forming the northernmost outlier of Hitchcock Heights

Hitchcock Heights

Hitchcock Heights is a mostly ice-covered mountain mass, 1,800 m, between Maitland and Apollo Glaciers at the south side of Mobiloil Inlet, on the east coast of Antarctic Peninsula. Discovered and photographed by Sir Hubert Wilkins on his flight of December 20, 1928, and rephotographed by Lincoln...

, on the east coast of Antarctic Peninsula

Antarctic Peninsula

The Antarctic Peninsula is the northernmost part of the mainland of Antarctica. It extends from a line between Cape Adams and a point on the mainland south of Eklund Islands....

. The nunatak was photographed from the air by Sir Hubert Wilkins on December 20, 1928, and by Lincoln Ellsworth

Lincoln Ellsworth

Lincoln Ellsworth was an arctic explorer from the United States.-Birth:He was born on May 12, 1880 to James Ellsworth and Eva Frances Butler in Chicago, Illinois...

 in 1935. Named in 1952 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 John D. Kay of the American Geographical Society

American Geographical Society

The American Geographical Society is an organization of professional geographers, founded in 1851 in New York City. Most fellows of the society are Americans, but among them have always been a significant number of fellows from around the world...

, who by utilizing these photographs assisted in constructing the first reconnaissance map of this area.