Preview to: the "Double Fix" Knot Pass Technique on Rappel (Abseil)
If we have a single point of damage on our climbing rope and need to rappel (abseil), two climbers can work as a team and use two different instances of fixing the rope to perform two different single-strand rappels. We then avoid having to use time-consuming knot passing techniques by avoiding, rather than passing, that knot. The full video goes deeper into how we do this and shares some risks to watch out for.
Follow this link to the full video and accompanying blog post.