Garrett Madison
Garrett Madison is an American mountaineer and is one of the worlds top high altitude mountaineering guides, having personally guidedclients to the summit of Mt Everest between the years 20092015, more than any other American. Garrett began guiding professionally in 1999 on Mount Rainier, and his company, Madison Mountaineering, provides domestic training programs and local summit climbs, operates on the highest peaks on all seven continents, and specializes in climbs of the highest mountains in the world. On May 1920, 2011, he reached the summit of Mt Everest on his fourth successful attempt as expedition leader and guide for Alpine Ascents International, and reached the summit of Lhotse onlyhours later as guide to Tom Halliday. Also on the expedition was guide Michael Horst who made both summits as well in under a 24hour period, a few days earlier. This historic achievement marks the first time in history that both peaks Mt Everest and Lhotse were summited together in less
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Source: Wikipedia