A process during which the climber uses two skinny ropes in place of a person thicker just one, but unlike double ropes, twin ropes ought to be clipped from the very same carabiner for each piece of security. An alternative choice to the Prusik knot, beneficial if the climber is http://finngjhfa.spintheblog.com/2344685/a-secret-weapon-for-sewing-machine-repair-boulder