This is one of the best dispersed camping areas around Moab. The location is north of Moab by 25 minutes or so. Right on two mountain bike trails - Sovereign Single track (great for intermediate and advanced riders) and the Klonzo trial system (great for beginners).
There are great moto options all around too. The road can be a little rough getting back to these sites so lower clearance vehicles may have some trouble.
Great location, great riding, and free.
This is a great option for large groups particularly if Willow Springs area is full. It is not the most scenic area, but it is a great staging area for large groups. This was also a great flat safe area for the kids to play on the motos while we prepared dinners and relaxed.
I typically visit this campground a few times per year on mountain biking trips. The grass fields and trees are unique in that most desert camping is spent sand out of all your nooks and crannies. The showers are a bonus after long days in the saddle.