Quite Dry Camping

We pulled in after dark. There are no lights and no services. The road is dirt and is very rutted out. We did ok in our 40' DP. The roads are wide. There is an arch at the entrance that looked to low for us so we came in the exit/second entrance just past the entrance. There are 16 spots with parallel parking and a covered picnic table and grill at each spot. It was about half full. We didn't see anywhere to pay, so assuming it's free? It is out side of town so very little noise. Everyone went all the way to the back and then drove through so their doors were facing the picnic tables.