Llanberis Slate Mines

Kelsey Breseman
5 min readMay 18, 2023

With its long lake and steep mountainsides, the Llanberis Valley has much of the look of a Norwegian fjord — but for the old slate mines which dominate one of the slopes. There are massive strip mines all the way up the mountainside, rivaled only by the mountains of tailings piled up to recreate the slopes.

Slate and slateworking are an enormous source of pride for the Welsh. Llanberis is called "the town that roofed the world," and they have an outstanding free museum on the site of the now-quiet Dinorwig Mines. We learn about famous buildings roofed with Welsh slate, the labor history of…

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