Left stranded in freezing temperatures near Everest's "death zone," the climber said he survived for days with almost no food or water.

Fifty-seven-year-old Dawa Sherpa spent nearly a week alone on the world’s highest mountain, surviving without supplemental oxygen, before crawling to safety

Left stranded in freezing temperatures near Everest's "death zone," the climber said he survived for days with almost no food or water.