 Complete the following phrase:  The Mohn Basin  is a major depression in the surface near the edge of the Antarctic polar plateau. It extends southward from the western limit of the Quarles Range for about and includes the névé area adjacent to the heads of the Bowman, Devils, Amundsen and Scott glaciers, in the Queen Maud Mountains of Antarctica. The feature was encountered in December 1911 by the South Pole party of the 