Hot answers tagged rock-climbing
This is simply a Clove Hitch on the belay loop. It could be quite effective to use instead of a belay plate if you can only use one hand because it doesn't require you to hold either side of the rope - it simply tightens and locks up in the event of a fall. The biner is placed where it is to make it easier to loosen the rope with one hand in-case it locks ...
He was demonstrating how to tie a Clove Hitch one-handed for setting up a belay when one arm is broken. The karabiner in the knot is to help release and untie it afterwards.
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