This place is amazing! We found it by accident on our way to Devils Tower and it was a great highlight of our trip. It was a little expensive at $25 per night. There is 10 miles of dirt road leading to it, but you won’t drive through prettier countryside anywhere else and the road was well maintained.
I am not giving a full 5 stars because the campground host had THE LOUDEST generator that we could easily hear across the lake and up the hill at our campsite. He also was not very friendly and his dog barked constantly.