Smoky Mountain campground is very close to the entrance of City of Rocks NR and just slightly further is Castle Rocks SP, however, the grounds are managed by the state park. There are some RV/equestrian sites that have 30/50 amp power and water hookups. There is a dump station on the road to the grounds but it was closed for repairs when we visited. There are plenty of pit toilets around the area and the ones we used were quite clean. Spots are mostly back-in but pretty easy access. The camp hosts were very friendly and the camp reservation includes a parking pass for the State Park ($10 value). The RV sites are very private and nicely spread out with pine trees in between. Great views of City of Rocks. Plenty of biking and hiking trails around and TONS of climbing. The visitor center is about 2 miles away and a general store another half mile beyond that. There’s opportunity for gas and food on the way to the grounds (both Albion and Almo have options) but best to get what you need before you leave the major highway. Having hookups at a State Park with such awesome views was sweet and the grounds are very well maintained. Reservations seem hard to come by during the high season.