![World's largest underground trampoline to open in enormous cavern at Welsh slate mine | Daily Mail Online World's largest underground trampoline to open in enormous cavern at Welsh slate mine | Daily Mail Online](https://i.dailymail.co.uk/i/pix/scaled/2014/06/16/article-0-1ED0D44000000578-640_636x382.jpg)
World's largest underground trampoline to open in enormous cavern at Welsh slate mine | Daily Mail Online
WorkAnywhere - Insane Trampoline Park Hidden In Welsh Cave | Facebook | By WorkAnywhere | There's an underground trampoline park hidden in this cave in Wales.
![This Trampoline Park Is In An Underground Cave, So That's Cool | by Julianne Ishler | OMGFacts | Medium This Trampoline Park Is In An Underground Cave, So That's Cool | by Julianne Ishler | OMGFacts | Medium](https://miro.medium.com/max/1400/1*6NnLdNRdDCcTb9T3pDAg9Q.jpeg)