I thought this campground might interest some of you. I has almost no amenities other than the view, but I think that is worth a lot. Only a few campsites have electric, but they are well-spread out and there is a dump station and water available. There is a very interesting cave 3.5 miles up the hill, and tours available. (Warning that you need to walk a half mile uphill just to get to the entrance and there are 600 stairs inside. It is a total of a two-mile tour, and I hit my head a lot, but I still think it is worthwhile.) I would certainly stay in the campground even if I was not interested in the caves. Almost no cell service, but I was able to get data on my hotspot.
In the first photo, the arrow shows the location of the campground from the main road on the way in.