Vinson Massif

Vinson Massif () is a large mountain massif in Antarctica that is 21 km long and 13 km wide and lies within the Sentinel Range of the Ellsworth Mountains. It overlooks the Ronne Ice Shelf near the base of the Antarctic Peninsula. The massif is located about 1,200 kilometres from the South Pole. Vinson Massif was discovered in January 1958 by U.S. Navy aircraft. In 1961, the Vinson Massif was named by the Advisory Committee on Antarctic Names, after Carl G. Vinson, United States congressman from the state of Georgia, for his support for Antarctic exploration. On November 1, 2006, US-ACAN declared Mount Vinson and Vinson Massif to be separate entities. Vinson Massif lies within the Chilean claim under the Antarctic Treaty System.

Mount Vinson is the highest peak in Antarctica, at 4,892 metres. It lies in the north part of Vinson Massif's summit plateau in the south portion of the main ridge of the Sentinel Range about 2 kilometres north of Hollister Peak.