People in hard hats on the trampoline
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Cave transformed into giant trampoline

The world's largest underground trampoline has been unveiled 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.

The trampolines are reached by train, with each linked by a 60ft (18.28m) long slide.

Tomos Morgan reports.

  • 10 Jul 2014
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