Dawa Yangzum, right, a relative of Nepalese Sherpa Dawa Tashi, who was injured during an avalanche, waits at a hospital in Katmandu, Nepal, Friday, April 18, 2014. An avalanche swept down a climbing route on Mount Everest early Friday, killing at least 12 Nepalese guides and leaving three missing in the deadliest disaster on the world's highest peak. (AP Photo/Niranjan Shrestha)