Some interiors were filmed inside Llechwedd Slate Caverns, near the historic mining town of Blaenau Ffestiniog. It's well worth a visit. Tourists descend nearly 500 feet in Europe's steepest ...
Formerly a Victorian Slate mine turned WWII art bunker, the 177 year-old Llechwedd Slate Caverns in Blaenau Ffestiniog, North Wales, are now a massive, subterranean playground. Bounce Below is ...
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