This was a steel arch hanging from a 20-foot (6.1 m)-long cable over a spring-fed pool. Patrons waited in long lines for the chance to hang from it, swing out over the water, then jump off as the beam reached its height. In early years the area you jumped off from was not over the water but a cushioned area. Some people who let go as soon as they started their swing would land on the cushion and then slide/crash into the water. In the mid 1980s the starting position was shifted so that you started over the water. Some patrons hung on too long and scraped their toes on the concrete at the far side. Others used the ride properly, but then were surprised to find out the water underneath was very cold. It was cold enough, in fact, that the lifeguards sometimes had to rescue people who were so surprised by the sudden chill they could not swim out. In 1984, one man died from a heart attack after experiencing the swing. This ride is still open today.

[via Wikipedia]

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