Skander Spies, a volunteer with Denali National Park's climbing rangers, had just headed out on patrol on the Kahiltna Glacier. Although they didn't know it yet, the rangers would record eleven separate crevasse falls that day, including Skander's. And his incident was scarier than most! The Sharp End is produced each month by Accidents in North American Climbing, an annual publication of the American Alpine Club, and is presented by Mammut, with additional support from Vertical Medicine Resources and Colorado Outward Bound School.