The 1922 party had as its leader Brigadier-General the Hon. C. G. Bruce, the supreme authority upon the Himalaya, to the exploration of which he had devoted much of his life. He knew the hill people, too, as no other man knew them, and his advice was invaluable in the selection of porters. The climbers were Mr. Mallory, Mr. Finch (who had been selected for the expedition of the year before, but had been unable to accompany it), Mr. Norton, and Mr. Somervell--all of whom were trained mountaineers; and Captain Geoffrey Bruce, who had never done any serious climbing before. Major Morshead was also of the party. The 1921 expedition had discovered what seemed a possible route to the summit by the North Col, and the new expedition proposed to follow its tracks. It was stronger in _personnel_ than its predecessor, and much stronger in equipment, for it had learned many lessons from the experiences of the year before. Among other things, it carried a supply of oxygen in bottles, and the necessary apparatus to use it. The party, being resolved to make the attempt before the monsoon broke, made straight for the old advanced base camp in the Kharta valley. Thanks to General Bruce's consummate skill in the organization of mountain travel, it reached that point on the date fixed and with everybody in good health. The next duty was to establish an advanced camp one stage before the North Col, up to which porters could be brought without undue fatigue. The summit of the Lhakpa La was abandoned, and an advanced base, known as Camp No. 3, was established under the west side of the pass, close to the East Rongbuk Glacier. The next step was to ascertain whether the road to the North Col was practicable, for when Mr. Mallory's party had travelled it the year before there had been fresh snow, and at this early season there was a danger of bare ice. Mr. Somervell and Mr. Mallory, on 13th May, with one coolie, set forth from Camp No. 3 on a reconnaissance, and found that the route they had followed the year before was one sheet of glittering ice. They saw, however, that they could cut their way into a corridor filled with good snow, which would lead them up to the foot of the final slope, and that final slope proved also to be snow and not ice. On the North Col they found a difficulty they had not looked for. Between the point at which they reached it and Everest itself was an ice cliff, which the year before they had circumvented. Now they found their way barred by a hopeless crevasse. Ultimately they discovered a route at the far end of the ice cliff, and reached the level snow from which the north ridge of Everest springs.