Just got back from “Vertical Limit” with Chris O’Donnell. The closest I can liken this experience to is having an iron smacked into your skull for two hours straight. Nitro, avalanches, pulmonary edema, frozen corpses, cut climbing ropes, exploding nitro, broken fingers, giant crevasses, leaking nitro, coughing blood, slicing helicopter blades. And did I mention the nitro? Mountain climbers are nuts. “Because it’s there” be damned.