On 6 June, 1924 George Mallory donned an oxygen set and set off for the summit of Everest with his young partner Andrew Irvine. Two days later they were glimpsed through clouds heading upwards, but after that they were never seen again. Whether they died on the way up or on the way down no one knows.
In the years following his disappearance, Mallory was elevated into an all-British hero. Dubbed by his friends the 'Galahad' of Everest, he was lionised in the press as the greatest mountaineer o...