Grosvenor Mountains is a group of widely scattered mountains and 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...

s rising above the polar plateau east of the head of Mill Glacier

Mill Glacier

Mill Glacier is a tributary glacier, 16 km wide, flowing northwest between the Dominion Range and the Supporters Range into Beardmore Glacier. Discovered by the British Antarctic Expedition and named for Hugh Robert Mill, British geographer and Antarctic historian.-See also:* List of glaciers in...

, extending from Mount Pratt

Mount Pratt

Mount Pratt is the northernmost nunatak in the Grosvenor Mountains, standing just east of the head of Mill Stream Glacier, 17 nautical miles north of Block Peak. Discovered by Rear Admiral Richard Evelyn Byrd on the Byrd Antarctic Expedition flight to the South Pole in November 1929, and named by...

 in the north to the Mount Raymond

Mount Raymond

Mount Raymond is a rock peak, 2,820 m, standing on the southernmost ridge of the Grosvenor Mountains, 2.5 nautical miles southeast of Mount Cecily. Discovered by Ernest Shackleton of the British Antarctic Expedition , who named this feature for his eldest son...

 area in the south, and from Otway Massif

Otway Massif

Otway Massif is a prominent, mainly ice-free massif, about 10 nautical miles long and 7 nautical miles wide, standing at the northwest end of the Grosvenor Mountains at the confluence of Mill Glacier and Mill Stream Glacier. Surveyed and named by the Southern Party of the New Zealand Geological...

 in the northwest to Larkman Nunatak

Larkman Nunatak

Larkman Nunatak is a large, isolated rock nunatak, 2,660 m, at the southeast end of the Grosvenor Mountains, 12 nautical miles east of Mauger Nunatak. Named by the New Zealand Geological Survey Antarctic Expedition for A.H. Larkman, Chief Engineer of the Shackleton's Imperial Trans-Antarctic...

 in the SE. Discovered by R. Admiral Byrd on the Byrd Antarctic Expedition flight to the South Pole

South Pole

The South Pole, also known as the Geographic South Pole or Terrestrial South Pole, is one of the two points where the Earth's axis of rotation intersects its surface. It is the southernmost point on the surface of the Earth and lies on the opposite side of the Earth from the North Pole...

 in November 1929, and named by him for Gilbert Grosvenor, President of the National Geographic Society

National Geographic Society

The National Geographic Society , headquartered in Washington, D.C. in the United States, is one of the largest non-profit scientific and educational institutions in the world. Its interests include geography, archaeology and natural science, the promotion of environmental and historical...

, which helped finance the expedition. Several peaks near Mount Raymond were apparently observed by Shackleton in 1908, although they were then considered to be a continuation of the Dominion Range

Dominion Range

The Dominion Range is a broad mountain range, about long, forming a prominent salient at the juncture of the Beardmore and Mill glaciers in Antarctica. The range is part of the Queen Maud Mountains...

.