Pantdreiniog quarry, 19th-century slate quarry in Bethesda, Wales.
Pantdreiniog quarry is a 19th-century slate excavation in Bethesda, Wales, situated at about 175 meters elevation. The site displays blue and purple slate rock formations and contains industrial equipment including tramway systems, hauling engines, and aerial ropeways.
The quarry started operations in 1825 and closed in 1898, becoming a focal point during the major labor strike of 1900-1901 that affected the Welsh slate industry. Its closure marked the end of an era of intensive slate extraction in the region.
The site's name reflects Wales' deep connection to slate mining, and the quarry shaped daily life and community bonds in the region for generations. Visitors can still see how the workplace was organized and how integral this work was to local identity.
Visiting requires good footing as the terrain is uneven with steep sections throughout the site. Dry weather is best for exploration, as wet surfaces can become slippery and unsafe.
The site produced specialized slate products for billiard tables, fireplace surrounds, and water tanks that set it apart from other Welsh quarries. These high-quality slabs were shipped beyond Wales, making the operation more than just a local supplier.
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