Photo de stock - Slate quarrying in Wales began during roman times. Slate is used as a building material,for roof tiles,but also for flooring,work tops and headstones. The Slate industry declined at the begining of the 20th century. Dinorwig Slate Quarry now houses a hydroelectric power station.

Photo de stock: Slate quarrying in Wales began during roman times. Slate is used as a building material, for roof tiles, but also for flooring, work tops and headstones.

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