Casey Brown and a friend were trying a seldom-climbed route at a limestone crag in western Montana. A huge block pulled loose. He tumbled toward the ground. Somewhere along the way, his helmet shattered. He believes the helmet saved his life. In episode 41 of the Sharp End, Casey and Ashley debrief this accident and the ways climbers choose to use (or fail to use) their vital head gear.

The Sharp End is presented by Mammut, with additional support from Colorado Outward Bound School and Suunto. This podcast is produced by the American Alpine Club.

Twenty years ago this month, Malcolm Daly and Jim Donini attempted a new route on Thunder Mountain in the Alaska Range. After Daly fell near the top of the climb, the ensuing rescue was one of the most dramatic in Alaskan mountaineering history. In episode 40 of the Sharp End, listen to Daly tell this legendary story in vivid detail.

The Sharp End is presented by Mammut, with additional support for this episode from Kavu, Colorado Outward Bound School, and Suunto. This podcast is produced by the American Alpine Club.

Stephen Leimgruber and his wife were wrapping up a day at Fortress Wall in Kentucky's Red River Gorge. He wanted to do just one more climb. Some warning lights were flashing: They were tired, it was getting dark, clouds were threatening rain. But, hey, he thought: It's a well-protected 5.8. What could go wrong? Find out what exactly happened, and what Stephen learned from it, in this episode.

The Sharp End is presented by Mammut, with additional support from Colorado Outward Bound School and Suunto. This podcast is produced by the American Alpine Club.

Mike Zawaski and a friend were ski touring in the popular Jones Creek area of Colorado in mid-December. Mike started their descent first and stopped in what he thought would be a safe point, but a slab avalanche broke loose and swept him hundreds of feet down the slope, breaking his femur. In this episode, learn how even well-trained and well-prepared ski mountaineers can get caught in the wrong place at the wrong time.

The Sharp End is presented by Mammut, with additional support from Colorado Outward Boulnd School and Suunto. This podcast is produced by the American Alpine Club.

Denali mountaineering ranger and flight medic Dave Weber returns to the Sharp End to discuss the ins and outs of calling for a rescue: when to do it (and when not to), how to make the call and what to say, and how to prepare for a helicopter rescue.

The Sharp End is presented by Mammut, with additional support from Colorado Outward Bound School and Suunto. This podcast is produced by the American Alpine Club.

Photo by Menno Boermans.

Ice climbing in Michigan's Upper Peninsula can be seriously cold. In this episode, Ashley speaks with Jason Eicholtx about a midwinter adventure in the UP that went dangerously wrong as an ice climber collapsed with hypothermia. Plus, wilderness medicine specialist Dr. Bryan Jarrett explains how to prevent hypothermia and treat it in the field.

The Sharp End is presented by Mammut, with additional support from Colorado Outward Bound School and Suunto. This podcast is produced by the American Alpine Club.

Starr Jamison suffered the agony of watching a good friend die in an avalanche in Colorado. He was one of three friends she lost to avalanches in a single year. In this episode, Starr describes the first accident and the painful, disorienting aftermath, how she recovered, and how she's working to help others deal with similar experiences.

The Sharp End is presented by Mammut, with additional support from Colorado Outward Bound School and Suunto. This podcast is produced by the American Alpine Club.

When climbers, skiers, and other backcountry adventurers have an accident, they often aren't the only ones to suffer an injury. Partners, rescuers, and witnesses at the crag can feel the affects of "stress injuries" for years to come. In this episode, Ashley speaks with Laura McGladrey, a mental health nurse practitioner and veteran health provider in wilderness and humanitarian settings, about the importance of psychological first aid for outdoor adventurers and rescuers.

The Sharp End is presented by Mammut, with additional support from Colorado Outward Bound School, Suunto, and Prival USA. This podcast is produced by the American Alpine Club.

Brad Carter had started up a very difficult climb at Index Town Wall in Washington state. In the first 50 or 60 feet, this route has three widely spaced bolts for protection. When Carter decided to rest at the third bolt, he got the shock of his life. This incident occurred almost a decade ago, but the lessons about bad bolts are extremely relevant today!

The Sharp End is presented by Mammut, with additional support from Colorado Outward Bound School and Suunto. This podcast is produced by the American Alpine Club.

Patrick Stefanik and a friend headed to Clear Creek Canyon, Colorado, on a beautiful Saturday in April. Crowds at the busy Creekside area forced them to change their plans, and Patrick started up an unfamiliar 5.9. When it came time to lower from the anchor, Patrick's fun day out went very, very wrong.

The Sharp End is presented by Mammut, with additional support from Colorado Outward Bound School and Suunto. This podcast is produced by the American Alpine Club.