Usas Escarpment

Usas Escarpment (coord|76|0|S|130|0|W|) is an expansive but discontinuous north-facing escarpment in Marie Byrd Land, Antarctica. It is about 200 miles (320 km) long, extending roughly west to east along the parallel of 76S from where the elevation of the snow surface descends toward the Ruppert Coast and Hobbs Coast. The position of the escarpment coincides with the north slopes of the Flood Range, Ames Range, McCuddin Mountains, and the eastern peaks of Mount Galla, Mount Aldaz and Benes Peak. The escarpment was observed by members of the United States Antarctic Service, 1939-41, and in ensuing scientific reports was referred to as 76th Parallel Escarpment. The approved name is an acronym for the discovery expedition.