Support WBUROne-Third Of Everest Deaths Are Sherpa ClimbersPlay04:14Download AudioDanielle PreissApril 14, 2018 ShareRescuers carry a Sherpa injured by an avalanche that flattened parts of Everest Base Camp on April 25, 2015. A 7.8 magnitude earthquake hit Nepal and took at least 17 lives at Everest Base Camp, including seven Sherpas. (AFP/Getty Images)