This place is a real gem and by far the best campground we stayed at on our 2 week trip.  The sites are nicely spaced out and since the grounds are surrounded by woods, it really feels quiet, private and peaceful.  The bathrooms were big and sparkling clean, they even had a dishwashing station outside.  Crazy Horse is only 15min away and downtown Custer is only 3 miles down the road.  Super convenient for groceries and supplies.  My only complaint: we didn't stay longer.