When I was a little kid, our school picnics were held there. I attended Armstrong Elementary School in Hazelwood in the early, early 70's. I remember a walk through haunted house, that, allegedly, somebody got stabbed in, so they closed it. They also had a ride through haunted house that I loved. I remember the skylift along the bluff, and a mad mouse rollercoaster I just loved. Our school would have a pavilion on the grounds with picnic tables in it, and mom loaded up our VW bus with picnic items and cold drinks. When Six Flags opened, the school moved the picnic there! Chain of Rocks Park declined rapidly after that.