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Clyne Wood Coal Level is a post-medieval and modern coal mine located in Wales, protected by Cadw as a scheduled monument. The mine exploits the coal seams of the Pennine Lower Coal Measures Formation and South Wales Lower Coal Measures Formation, sedimentary rocks laid down during the Westphalian period and composed of mudstone, siltstone, sandstone, coal, ironstone and ferricrete. These geological formations made South Wales a major centre of coal extraction from the late eighteenth century onwards.
The site represents the industrial heritage of Welsh coal mining, a period when mining transformed the landscape, economy and society of the region. Level mining—horizontal working into hillsides—was an early and efficient extraction method that required less capital investment than deep shafts and allowed miners to follow coal seams directly into the mountainside. Clyne Wood's geology and location made it suitable for such operations, taking advantage of the exposed coal measures in the local bedrock.
Today the monument survives as a physical record of Wales's industrial past, preserving evidence of the mining techniques, working conditions and geological knowledge of past generations. The site is now in the guardianship of Cadw, the Welsh Historic Monuments service, ensuring its protection and survival for future study and understanding of the region's mining heritage.
Clyne Wood Coal Level is a scheduled monument protected by Cadw under reference GM464. View the official record →
Clyne Wood Coal Level is a post-medieval and modern coal mine located in Wales, protected by Cadw as a scheduled monument. It is designated a Scheduled Ancient Monument by Cadw under reference GM464.
Clyne Wood Coal Level dates from the post medieval/modern period, and is classified as a coal mine. It is one of over 32,000 scheduled monuments protected across the UK.
Clyne Wood Coal Level 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 GM464.
Several scheduled monuments lie within 10 km, including Clyne Wood Arsenic & Copper Works (0.4 km), Clyne Valley Shaft Mounds (0.7 km), Ynys Pit & Leat (0.8 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Clyne Wood Coal Level'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.
Clyne Wood Coal Level stands on Pennine Lower Coal Measures Formation And South Wales Lower Coal Measures Formation (Undifferentiated), bedrock that formed in the Westphalian. The rock here is mudstone, siltstone, sandstone, coal, ironstone and ferricrete.