Wrysgan Quarry, Slate quarry in Tanygrisiau, Wales.
Located 420 meters above sea level, the quarry consists of underground chambers reaching widths of 40 meters with supporting pillars throughout the complex.
The quarry operated from 1830 to 1946, undergoing major developments in the 1850s with the construction of new inclines connecting to the Ffestiniog Railway.
The quarry represents the industrial heritage of North Wales, employing up to 100 workers during its peak production period in 1897.
The remains include multiple adits, mill ruins, and an incline system, though visitors should note that underground areas are unstable and dangerous.
The site implemented electrical power in 1920 to address persistent water shortages that affected the water-wheel powered processing mills.
GPS coordinates: 52.99110,-3.97120
Latest update: March 3, 2025 04:23
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