After reaching the top of Dog Tooth Peak in the Sierra Nevada National Forest in the US, Larry Bishop began his descent. On his way down, he took a tumble off the trail and landed on a slim ledge of granite. Staying on that perch required him to cling to the side of the mountain for 52 hours—the alternative was a 10,000-foot drop! Eventually, Larry was airlifted to safety when a member of a rescue team risked his own life to reach him.