Incredible RV campground. Electric hookups only. But the setting is stunning. Huge bluffs on one side, the Little Missouri river on the other.
The Maah Daah Hey mountain bike/horse riding trail goes through the campsite and it offers incredible vistas.
We don't have horses, but they let us stay in the Equine camp (I called in- the lady that works there is very nice and helpful).
Only 7 minutes drive from the entrance to Theodore Roosevelt National Park.