In this lesson, you will learn how to pass a knot during a rappel descent, a situation that may occur when a damaged rope is isolated by a knot or when two ropes are joined together. You will discover the sequence of maneuvers that allows you to temporarily transfer your weight onto an ascender and a cowstail in order to reposition the rope in your descender below the knot. This technique ensures a safe and controlled transition so you can continue the descent without risk. Mastering this maneuver is essential for remaining autonomous when facing unexpected situations in canyoning.