4 or 5 sites nicely spread out with picnic tables and garbage cans at each site, there are no restrooms or water, Madera Canyon trailhead starts from a small parking area near one end of the park and is a 2 mile loop trail with nice views, the trail information board says overnight parking is allowed at the picnic sites but not in the trail parking area, it does not specify how many nights, we stayed 2 nights in a class c with a tow vehicle, it was peaceful and the trail was a great hike. We had no Verizon service here.