Boomerang

At a height of 10 meters you look fearfully into the depth, but now there is no turning back. You have to go through it, and what you slide down on one side, you have to slide back up on the other. Are you brave enough to plunge into the depths here?

Hints:
Size restriction: from 1,20m
Age restriction: -no restriction-
Weight limit: up to 90kg
Image source: Aquopolis Costa Daurada