1985 Image from YouTube
Kids run through a maze of 40 lightweight punching bags.
Faces and monster horns have been added to the bags since opening day.
In the 1980s the signage featured Sesame Street character Frazzle:
1986 Image from YouTube
The current sign emphasizes safety and declares "no punching bags".
However in 1980 punching was allowed.
The opening day brochure said "Youngsters can punch, push, shoulder and dodge their way through a forest of 40 six-foot-high lightweight punching bags to get to the other side."