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Llechwedd Slate Caverns

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The Llechwedd Slate Caverns are an old mining network under the mountains of Snowdonia. The caverns and tunnels are hewn from the solid rock of the mountains.   Llechwedd lies in the town of Blaenau Ffestiniog, once the largest town in north Wales after Wrexham, but its population fell with the decline of the slate […]