Deep inside a Welsh cave lies the best technicolor trampoline party in the world.
Blaenau Ffestiniog, a mining town of fewer than 5,000 residents in Wales, will soon be home to one of the coolest bounce houses in the world. On July 4, Bounce Below opens in the Llechwedd quarry, one of many mines in the region that, since the 18th century, supported a once-thriving slate industry.
