The shape of the sea floor of the Arctic Basin is slowly being revealed by ice island programmes, icebreakers working the peripheral edges, under-ice nuclear submarine explorations and isolated ice landings by aircraft (Ostenso, 1962). The topographical features of the North American side of the Arctic have been studied by numerous investigators (Kutschale, 1966; DeLeeuw, 1967; Vogt and Ostenso, 1968), and are well documented. The Eurasian portion of the Arctic Basin is, however, less well known.