Quiet site right on the yellow stone river. Enough sites for 7-8 RVs and car campers. I camped with a motorcycle and tent for one night as I was on a time table. It was a very pleasant experience and I would like to re-visit when I'm in the area.
There is a employee of the Parks and Recreation dept that lives nearby. He stops by in the late evening and offers cut up wooden pallets for donations or for free if you can't muster the coin. Very friendly and provides a nice amenity as you aren't permitted to cut firewood on the site. If you can, please donate so that he continues to provide this service.
The site is about 9 miles off of I-90. There is a gas station, a bar and a small cafe in the town of Custer which is near the I-90 exit. All in all, the site was a hidden gem to me.