Flash Back, Log flume attraction in Wavre, Belgium.

Flash Back is a log flume ride at Walibi Belgium that stretches 511 meters and reaches a maximum height of 23 meters. Passengers travel in boat-shaped vehicles through a series of curves and drops before finishing with a substantial splash in a water basin.

Flash Back opened on 29 April 1995, when Walibi Belgium marked its 20th anniversary with three new attractions and a 200 million BEF investment. Built by Mack Rides on one hectare, it replaced the Rio Grande log flume after 16 years; that ride was moved in 1996 to Walibi Sud-Ouest as Drakkar. The Belgian firm Original Factory designed and themed the ride as a rejuvenation factory, and building it required part of the main lake to be reduced.

The ride's story casts it as an 1869 factory working on a rejuvenation machine: in the queue, a conveyor overhead carries children's shoes, teddy bears, old spectacles and false teeth, and a square outside holds a machine once said to dispense an "Elixir de Jeunesse". The sign on the red-and-yellow tower reads "FLASH BACK".

Expect water splashes throughout the ride, particularly during the final descent, so bring dry clothes or towels. It is best to secure valuables before boarding, as the water landing can be quite wet.

The final lift raises boats to 23 metres before a double drop that ends in the ride's largest splash. The on-ride camera sits at the second, smallest of the three descents, so the photo is taken on the forward plunge, not the backward one.