Mount_Aldaz
Usas Escarpment (76°0′S 130°0′W) is an expansive but discontinuous north-facing escarpment in Marie Byrd Land, Antarctica. It is about 200 nautical miles (370 km; 230 mi) long, extending roughly west to east along the 76th parallel south 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.[1]