Season 4's Towering Flume of Doom
The Towering Flume of Doom is an obstacle, used as the first obstacle in the Summer Wipeout Zone of Season 4. It was interchanged with Chairborne from Spring for the rest of the season.
It is a 7-story tall water slide where contestants open a door and stand in at the top. Then the door closes, and on the last second of the countdown, the trapdoors open, dropping them down the slide and shooting them out into the water.
It was replaced by Killer Luge in Season 5's Winter Wipeout.
A similar obstacle named Drop Out later appeared as the first obstacle in the Wipeout Zone of Season 9.