A YouTube video shows the scale of an avalanche on Mount Everest on Saturday . Eight Kobusch are dead at Everest , but not identified ; three Americans are also dead . Helicopter rescues are underway to retrieve climbers stranded on Everest .
A YouTube video shows the scale of an avalanche on Mount Everest on Saturday . Eight Nepalis are dead at Everest , but not identified ; three Americans are also dead . Helicopter rescues are underway to retrieve climbers stranded on Everest .