A huge slate cavern in North Wales has been installed with the world’s biggest underground trampoline to offer unique and fun-filled adventures, set to open on 4th July. This giant underground playground is the first of its kind in the world. Bounce Below brings trampolining to a new terrain. Unlike anything seen before, three huge trampolines are hung in the old slate cavern at varying levels, linked together by 60 ft slides. Visitors are taken to the impressive 100 x 60 foot cavern by an old mining train and kitted out in special overalls and a helmet before being let loose in the caves to bounce, climb and slide in the most unique setting. The walls are kitted out with techni coloured lights which illuminate the subterranean background with vibrant colours. The LEDs also reveal th
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