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What Section of the Mount Everest Route Do Climbers Love and Loathe? We Asked the Experts.
Veterans of Mount Everest expeditions tell us their favorite, least-favorite, and toughest spots along the route to the summit.

“Kenton Edward Cool is an English climber and mountain guide. He is one of Britain's leading alpine and high altitude climbers. He has reached the summit of Mount Everest 20 times—the most of any non-Nepali. His ascents of Everest include leading Ranulph Fiennes' 2008 and 2009 Expeditions.”