Beautiful Area
It costs $35 to camp in the State Park or $20 entrance fee, but there are so many dispersed spots in the BLM area right outside the state park boundaries.
Before you turn onto the road to take you to the state park there are several wide open flat areas to stay in. This area is pretty busy with boondockers but we found a secluded spot 1/2 mile from the Wild Horse trail head at 38.5815894,-110.7954139. There are several spots that are reachable by RV, but further back you’ll need high clearance and possible 4x4.
The dirt roads off the main road close to the state park are very rutted and washed out. The roads were doable in our 26’ class C but not really worth it when there are so many other easier options.
There is no water here and no trash service so pack in and pack out including your digested food.:)
There are pit toilets at the Wild Horse Trailhead, and there appeared to be some overnight campers at the trailhead as well.
No cell service from any carrier, and our cell booster did not help.