 On his third attempt at summiting the tallest mountain in the world in 1993, Groom finally completed Everest without the use of supplemental oxygen.He attempted twice in 1991, the second time ending in a fall down the Lhotse Face in an avalanche; he received only a broken nose and a few cracked ribs and was lucky to have survived the ordeal.In 1995, Groom unknowingly turned around just shy of the summit of K2 after taking the more difficult and technically demanding SSE Spur route.