Cambrian quarry

Site of Special Scientific Interest in Wales

The Cambrian quarry was a slate quarry, located to the west of Glyn Ceiriog in Denbighshire, North Wales. There was some small-scale extraction of slate from the 17th century, but commercial extraction began in 1857, and the scale of operation increased from 1873, when the Glyn Valley Tramway opened, providing an easier route to market for the output of the quarry. Production after 1938 was on a reduced scale, and the quarry closed in the winter of 1946/47, mainly due to a lack of workers.

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