The Golden Crack is perhaps the most famous obstacle on the trail. The first year or two the trail was open, there was a big rock in the crack to help get across. The Golden Stairs have laid more than one 4X4 on its side and often deals fits to those without lockers. Perhaps the most challenging obstacle in Moab may be attempted just after the Wall. The Double Whammy probably breaks more gears, driveshafts and other drivetrain parts than any other obstacle in the area.
Roll overs are also common there.
It has a bypass which is the recommended route for all but the most fool hearty. If you make it this far be careful of the Body Snatcher. If your wheels spin inside it's jaws you may need side window replacement and body work. After that, it's a long bumpy drive down Gold Bar Rim, then the road through Little Canyon and back to Highway 191. This is actually still part of the Poison Spider trail.