nunatak
A nunatak (from Inuit ''nunataq'') is the summit or ridge of a mountain that protrudes from an ice field or glacier that otherwise covers most of the mountain or ridge. They are also called glacial islands. Examples are natural pyramidal peaks. ...
in the
Grosvenor Mountains
The Grosvenor Mountains () are a group of widely scattered mountains and nunataks rising above the Antarctic polar plateau east of the head of Mill Glacier, extending from Mount Pratt in the north to the Mount Raymond area in the south, and from ...
Byrd Antarctic Expedition
Richard Evelyn Byrd Jr. (October 25, 1888 – March 11, 1957) was an American naval officer and explorer. He was a recipient of the Medal of Honor, the highest honor for valor given by the United States, and was a pioneering American aviator, p ...
flight to the
South Pole
The South Pole, also known as the Geographic South Pole, Terrestrial South Pole or 90th Parallel South, is one of the two points where Earth's axis of rotation intersects its surface. It is the southernmost point on Earth and lies antipod ...
in November 1929, and named by him for Paul Block Jr., son of
Paul Block
Paul Block (November 2, 1875 – June 22, 1941) was president of Paul Block and Associates (later Block Communications) and publisher of the ''Pittsburgh Post-Gazette'' and ''Toledo Blade''.Mountains of the Ross DependencyDufek Coast
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