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In 1953, Sir Edmund Hillary and Tenzing Norgay became international heroes by reaching the summit of Mt. Everest, accomplishing what many had tried before and failed. Their names went down in the archives of history, with Hillary now considered one of the most influential people of the twentieth century. But what if Hillary and Tenzing weren’t actually the first to reach the summit? What if another group of explorers made it first? Could history be wrong? In an all new Discovery documentary, Everest's Greatest Mystery, a team of expert mountaineers undertake an epic adventure to solve the mystery of George Mallory and Andrew Irvine, two explorers who perished on their journey to Everest’s peak in 1924. (Discovery Networks)
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