Climbers at an Everest base camp, above, watch as the avalanche that killed 13 Sherpas barrels down the mountain on Friday.
NBC News World News, NBC News: World
Sat, 04/19/2014 - 8:41am
Climbers at an Everest base camp, above, watch as the avalanche that killed 13 Sherpas barrels down the mountain on Friday.