What 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, named after  a United States Representative from Georgia ?
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 1200 km 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 (US-ACAN), for Carl G. Vinson, United States congressman from the state of Georgia, for his support for Antarctic exploration. On Nov. 1, 2006, US-ACAN declared Mount Vinson and Vinson Massif to be separate entities.
Adams Glacier (Wilkes Land) Adams Glacier ( ), also known as John Quincy Adams Glacier, is a broad channel glacier in Wilkes Land, Antarctica which is over 20 miles long. It debouches into the head of Vincennes Bay, just east of Hatch Islands. It was first mapped in 1955 by G.D. Blodgett from aerial photographs taken by U.S. Navy Operation Highjump (1947), and it was named by the Advisory Committee on Antarctic Names (US-ACAN) for John Quincy Adams, sixth President of the United States. Adams was instrumental while later serving as U.S. representative from Massachusetts in gaining congressional authorization of the United States Exploring Expedition (1838–42) under Lieutenant Charles Wilkes, and perpetuating the compilation and publication of the large number of scientific reports based on the work of this expedition.