Illustration showing an artist's impression of George Leigh Mallory (top) and Andrew Irvine climbing up the Second Step on Everest, 1924. Mallory and Irvine, the British climbers, were last seen by N.E. Odell near the Second Step during their attempt to climb Everest on 8th June 1924. They did not return from their attempt and the question of whether they reached the summit remains.