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. Carl Vinson: Carl Vinson (November 18, 1883 – June 1, 1981) was a United States Representative from Georgia.
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