![Bounce Below, Llechwedd Slate Caverns, Blaenau Ffestiniog, Wales, UK © Clarissa Debenham / Alamy Stock Photo - Alamy Bounce Below, Llechwedd Slate Caverns, Blaenau Ffestiniog, Wales, UK © Clarissa Debenham / Alamy Stock Photo - Alamy](https://c8.alamy.com/comp/EJ0G4D/bounce-below-llechwedd-slate-caverns-blaenau-ffestiniog-wales-uk-clarissa-EJ0G4D.jpg)
Bounce Below, Llechwedd Slate Caverns, Blaenau Ffestiniog, Wales, UK © Clarissa Debenham / Alamy Stock Photo - Alamy
We test the world's largest underground trampoline... in a north Wales slate cavern | ITV News 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/v2/resize:fill:1200:900/g:fp:0.59:0.48/1*FdWNryqKofBsR5C_Mb3jeg.jpeg)
This Trampoline Park Is In An Underground Cave, So That's Cool | by Julianne Ishler | OMGFacts | Medium
![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/2014/06/16/article-0-1ED0D44000000578-640_636x382.jpg)