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Dinorwic Quarry is a post-medieval and modern slate extraction site located in Conwy, Wales, representing one of the principal industrial enterprises of North Wales during the nineteenth and twentieth centuries. The quarry was developed to exploit the extensive slate deposits of the Snowdonia region, becoming a major centre of slate production that supplied roofing material to markets across Britain and beyond. The site comprises extensive excavations, processing facilities, and associated infrastructure characteristic of large-scale slate quarrying operations of the period. Dinorwic Quarry stands as significant testimony to Wales' dominant role in global slate production during the industrial era and to the technological and labour systems that sustained this extractive industry.
Dinorwic Quarry is a scheduled monument protected by Cadw under reference CN337. View the official record →
Dinorwic Quarry is a post-medieval and modern slate extraction site located in Conwy, Wales, representing one of the principal industrial enterprises of North Wales during the nineteenth and twentieth centuries. It is designated a Scheduled Ancient Monument by Cadw under reference CN337.
Dinorwic Quarry dates from the post medieval/modern period, and is classified as a slate mill. It is one of over 32,000 scheduled monuments protected across the UK.
Dinorwic Quarry is a Scheduled Ancient Monument, legally protected by Cadw — the body responsible for designating and safeguarding heritage sites in Wales. The official designation reference is CN337.
Several scheduled monuments lie within 10 km, including Castell Dolbadarn (1.4 km), Hut Circle Settlement and Rectangular Hut North of Hebron Station (2.1 km), Cwm Brwynog Deserted Rural Settlement (3.7 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Dinorwic Quarry's history, each drawn from the record and mapped to the exact spot:
Every location is different. Not every section appears for every place, only what the historical record actually holds turns up in a report.
Dinorwic Quarry stands on Lower Cambrian Rocks (Undifferentiated), bedrock that formed in the Early Cambrian. The rock here is mudstone, siltstone and sandstone.