First, this park is normally only open weekends and is closed some months so check before going. You must book and pay in advance on line as they take no money at this park, there is no store, nothing to buy. This park is VERY remote, a 22 mile dirt road is required to get to the park and it takes about 90 minutes to traverse that road. There are about 7 campsites for tents only, no water, no electricity, no hookups, and the only bathroom is maybe 5 miles away. There is no service is most of the park ( WiFi at park ranger office and service on top on the peak). To get to the river you must cross 3 streams, some 11 inches deep or so, very rocky, many cars cannot make this crossing, but you can cross it on foot. We have a 4 wheel drive truck and had no problem. If you are still interested, the park is amazing, the river is so serene, several waterfalls, beautiful trees, wildlife and some trails. We went in November, 2018 and the weather was perfect. We hiked all the trails, including the 12 mile loop which was challenging including crossing the water. We had a great opportunity to take a tour of the rock art and were so glad we did, Nora was a great tour guide, plus this was free!