Stayed here after the Sturgis rally.  Was very quiet and clean.  Most of the time we were here by ourselves.  There is an OHV trail just outside the quarry border, but wasn't used very much.   Had just a few people come and stayed the night.  Would definitely stay here again.  Easy in and easy out of the area.  Saw some deer and a lot of cows.  It was free with a 14 day stay limit.  Close to town, restaurants, gas stations, etc.