Harts Ranch is on the outskirts of Rapid CIty, SD. It is an RPI Park and one of the best places we have visited so far.
All sites are concrete slabs with picnic tables and full hook up. Some or 30 and some 50 amp. There are no fire pits and fires are not permitted.
Activities, security and staff make this place. It has over 400 campsites and is a membership resort. Many of the spots are seasonal and alot of them are longer term campers (21 days). They also have a good many cabins.
There are activities every day. Community campfires are 2 times a week, they have kid hay rides quite often. They also seem to have nightly activities for the adults.
Security is constant. The gate is manned 24 hours a day and they have a roving security process as well. Also related to security is the insistence of keeping vehicles off the grass, including your rig.
The park is clean, well maintained and secure. They have a nice little convenience store and gas station as well.
If you are going to be in the Rapid City area and sight seeing, this is a great place to hang your hat while you are here. You are about 30 miles away from all the major attractions. And the two major access routes are very convenient to the campground.