Two years ago we were in the area and toured the Prescott area. There is a geological formation in the area named Point of Rocks which is fascinating. Located nearby is a RV park named aptly enough Point of Rocks RV Campground. Close to town, interesting rock formations, and decent looking (at least from our drive by). It isn't a "Resort" if that is what you are looking for. You can see it on Google Earth. Also check the reviews on RV Park Reviews (
http://www.campgroundreviews.com/regions.../Prescott.html)