Mountain climber was 'Dead Lucky'

Australian climber Lincoln Hall
Australian climber Lincoln Hall at the Advance Base Camp at 20,800 ft. on May 28, 2006 on Mount Everest. A few days before, 50-year-old Hall collapsed near the summit of Everest and was abandoned by his own team, who thought he had died, only to be found alive and rescued by another team of climbers.
Photo by Jamie McGuinness/Project-Himalaya.com via Getty Images

Australian mountaineer Lincoln Hall reached the peak of Mount Everest in 2006. On his way down, he collapsed and was left for dead, only to be found the next morning, sitting on the ridge of the mountain, alive.

His story is the subject of his new book, "Dead Lucky." which he discussed recently at the Commonwealth Club of California.