20 Incredible Things You Never Knew Existed

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A Trampoline Park in a Cave

Inside the massive Llechwedd Slate Caverns in Gwynedd, Wales, there’s a 10,000 square foot cave and includes an enormous underground trampoline park.

The subterranean playground features six giant netted trampolines which are suspended at various heights, ranging from 20 to 180 feet above the cave floor.

There’s also an industrial slide which is the length of a double-decker bus that connects each neon-lit level.

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