It was mapped by the United States Geological Survey from surveys and U.S. Navy air photos , 1956 -- 66 , and so named by the Advisory Committee on Antarctic Names .
It is the southernmost rock of the Neptune Range .
It was mapped by the United States Geological Survey from surveys and U.S. Navy air photos , 1956 -- 66 , and so named by the Advisory Committee on Antarctic Names because it is the southernmost rock of the Neptune Range .