The Joshua Tree National Park Superintendent's Compendium states that: 1. Vegetation is not allowed to be used as an anchor. 2. Only neutral or rock colored bolt hangers are allowed.
This massive block was once a part of the short cliff directly behind it until it suddenly cut loose after a particularly heavy winter rain years back.
Gone are the two cracks on either side (Fists of Fury, a 5.10a fist crack and Enter the Dragon, a 5.9 squeeze chimney) but in exchange there now exists a difficult, high quality boulder problem - not such a bad trade really.