Vinson Massif, at 78°35’S, 85°25’W is 21km (13 miles) long and 13km (8 miles) wide. It lies on the southern part of the main ridge of the Sentinel Range. Named for Carl G Vinson, a Georgia congressman and a major force in 20th century US Antarctic exploration, it was first climbed in December 1966 by a combined group from the American Alpine Club and the National Science Foundation.
Four members of the joint expedition led by Nicholas B. Clinch made the first ascent of the mountain on 17 December 1966. During the next days the team continued climbing in the local area adding Mount Tyree (4845m/15,892ft), Mount Shinn (4801m/15,747ft) and Mount Gardner (4686m/15,370ftover 7 years ago