Buzz·Posted on 23 Jun 2014There Is A Giant Underground Trampoline In Wales And It Looks AmazingLet's bounce!by Robyn WilderBuzzFeed Staff, UKFacebookPinterestTwitterMailLink Look at this. It's Bounce Below, a series of enormous underground trampolines in Blaenau Ffestiniog, North Wales. Bounce Below / ZipWorld Each trampoline hangs between 20 and 180 feet above the floor in an abandoned slate mine in Blaenau Ffestiniog, North Wales. Bounce Below / ZipWorld The mine itself is twice the size of St Paul's Cathedral, and visitors have to enter it on a special train. Bounce Below / ZipWorld They climb, bounce, slide, and jump across the soft assault course in the middle of an impressive light show. Bounce Below / ZipWorld Bounce Below opens on 4 July and you can buy tickets online. Bounce Below / ZipWorld Meet you there?