Jailhouse Rock is well-known and imposing structure in the South Desert areaThe Temple is the other imposing structure around hereHeavily erroded badlandsThe Cathedals trail passes by all of these “cathedrals,” which stand nicely arranged in a line for photographersThe Gypsum Sinkhole may be just a hole in the ground, but it’s 50 feet in diameter and 200 feet deep! I hope you’ll excuse me for not getting an over-the-edge shot. “Stay away from the edge of the Gypsum Sinkhole. The rocks here are very soft and unstable, and can collapse at any time.”The horizonal lines made this an interesting and unusual sightWhat in the world are those crazy white lines going thru the rocks? A disadvantage of hiking cross trail is that there are no signs to explain phenomena like this.The Temple of the Sun and (of course) the Temple of the Moon are the highlights of the South Desert