Quick descent as a part of the climb (the last link) is often the most dangerous step because there are usually multiple protection points for protection between the protector and the climber during the other climbs. All protection points are unlikely to fail. The safety of descendants who descended at the time of rapid descent was completely pinned on the top fulcrum, and once the failure rate dropped, people could not control it at all. Although there is only one top protection point in the protection, the speed of the evacuation after the climb is not as good as the protection of the fulcrum. It is so established. In addition, when the rope is lowered, there is the possibility that the rope may get stuck in the rock seam. If the rope has been pulled by a small half of the rope, it will often take a long time to climb back and release N. If you accidentally check, you may find people sometimes. Quickly down to the head of the rope, the head of the rope is still far away from the ground, and even worse, one slides out of the knotted head. .
Whenever there was a real thing falling down with 8 words, there were novices who used 8 words incorrectly to cause 8 words to open the main lock of the thread, causing an example of a fatal accident. This all shows that the downhill risk is inherently difficult to control. Once the consequences of the problem are very serious, so you can go down if you can climb. With careful operation, it can be done safely as a sport when the top protection point is reliable and has redundancy. As a training, you can see how to use a seatbelt, lock, and descent to drop down (dulfersitz)
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