Fuchs was the leader of the Commonwealth Trans-Antarctic Expedition, a Commonwealth-sponsored expedition that completed the first overland crossing of Antarctica, with Hillary. Fuchs used Sno-Cat tractors to cross the continent in 99 days, starting at Weddell Sea, ending at Ross Sea, and crossing the South Pole. Fuchs and his party arrived at Antarctica in January 1957 after camp had been set up. The party departed from Shackleton Base on 24 November 1957.
During the trek, a variety of scientific data were collected from seismic soundings and gravimetric readings. Scientists established the thickness of ice at the pole, and the existence of a land mass beneath the ice. On 2 March 1958, Fuchs and company completed by reaching Scott Base, having travelled 2,158 miles. (Source: Wikipedia)