World's largest underground trampoline (Video)

The world's largest underground trampoline has been unveiled.  The tampoline is located in a cave in Blaenau Ffestiniog, North Wales. The unused cavern was once used as a slate mine but has been transformed by installing three giant trampolines.  Why couldn't they have cool things like this when I was a kid.  Who am I kidding, I would be loving it now.


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