These were two water slides, set slightly apart from the rest of the park, that took advantage of nearly vertical slopes to allow riders to attain higher speeds than usually possible. One started with riders going almost vertically downwards and was covered with screening for the first several feet. As barriers on the side of the slides were very low, lifeguards reminded every user to remain flat on their back with their arms at the side as they descended since there was no way to ride it otherwise and stay on. The fall from both slides had the potential for very serious injury. Those who made it to the bottom found their progress arrested by water, which made a large splash, and then a small pool. The speed at which riders met the end resulted in many getting wedgies and enemas from the experience. Only one of these slides remains today as H-2-Oh-No.

[via Wikipedia]