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First American ascent and traverse of the mountain / From Wikipedia, the free encyclopedia
The 1963 American Mount Everest expedition reached the summit of Mount Everest using the conventional route via the South Col. However, two team members, Tom Hornbein and Willi Unsoeld, were the first to take a traverse route[note 1] over the mountain by ascending the West Ridge and onto the North Face up to the summit, then descending by the South Col. The leader of the expedition was Norman Dyhrenfurth who had been the photographer on the 1952 Swiss Mount Everest expedition.