Tyler Willis and a friend were descending from a successful ascent of Mt. Owen in Grand Teton National Park. It was late in the day when they reached the Teton Glacier, which they had crossed without a problem early that morning. Just a few steps later, Tyler plunged into a hidden crevasse, an extremely rare accident for the Tetons. By the time climbers pulled him to the surface, he was hypothermic, and it wasn't until the next day that rangers could helicopter him to safety. Hear all about it in Episode 58 of the Sharp End.

Visit Sharpendpodcast.com to find video footage from the rescue and information on recognizing and treating hypothermia.

The Sharp End podcast is presented by Mammut, with additional support from Desert Mountain Medicine, Suunto, and Minus33. This podcast is produced by the American Alpine Club.