Modern Climbing Ropes Complicate Tried and True Crevasse Rescue Technique
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The "self-tending" prusik using a belay device to capture progress on a climbing haul system, often used for crevasse rescue, has become more complicated due to modern ropes. The thinner diameter of these ropes means tighter wraps on the prusik, which - in turn - means those wraps are small enough to get stuck in the device and break the capture system.