The Kings Palace tour, a 1.5-hour ranger-guided tour through four highly decorated chambers, departs from the underground rest area. You will descend to the deepest portion of the cavern open to the public, 830 feet beneath the desert surface. Although not as difficult as the Natural Entrance route, this 1-mile tour does require descending, and later climbing, an 8-story hill.
Added by Upcoming Robot on March 27, 2009