The Queen Maud Mountains form the extreme southern boundary of the Ross Senkungsfeld. Their geographical relationships to other features of the Ross Sea sector are illustrated in Figure 1. These mountains were discovered by Amundsen on his journey to the South Pole in the summer of 1910–1911, but no geological work was done by members of his party; they remained a virgin field for the geological staff of the Byrd expedition. Although the tops of the mountains and the gentler slopes are largely smothered with ice, making detailed exploration difficult and hazardous, the structure of the range as a whole is developed on such grand and yet such simple lines that its major features and relationships were revealed, even in the somewhat hurried reconnaissance we were able to undertake.1
As one approaches the mountains across the Ross Shelf ice from the north he is . . .