Little Missouri State Park
This park is outstanding. There are many amenities including electrical hookups, water, horse corrals vault toilets and pay showers. But the amenities aren't why you stay at this park. You stay for the views. The horse and hiking trails are unbelievable. The campgrounds themselves are quiet. You'll experience starry skies and the howls of coyotes. The roads aren't paved and there aren't many trees in the campgrounds themselves.