We arrived on a Friday night, without reservations. Our first night of van living. Found the security guard who connected us with the ranger. There were plenty of sites to chose from. The ranger then found us a better site for $5 less, The place was quiet, Beautiful sunset. We aren't off-roaders but noticed a lot of ATVs around. Seems like the place to be. There are also mountain bike trails around. In the morning we discovered the Calico Ghost Town attraction right next to the park. In fact entrance to the ghost town is included in the camping fees. The town is an abandoned silver mining town. There's a few historical buildings and mines you can hike around. You can pay for a tour of the mine. Lots of old west quaint shops, and restaurants. We watched a skit of a shoot out preformed in the main square. Spent more time there than planned, it was that fun.