Rockbound Canyon is a beautiful, rugged canyon high in the San Gabriel mountains to the east of Crystal Lake with a descent of almost 3400ft. This involves much downclimbing and bouldering as well as a challenging two-stage rappel descent of the huge, 250ft headwall. It is a tough and physically demanding hike for the experienced canyoneer. See beta at http://www.dankat.com/advents/rockbd.htm. This event is limited to experienced canyoneers only.