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Genwen Engine House is a post-medieval and modern engine house located in Wales, situated above bedrock of the South Wales Upper Coal Measures Formation. This geological sequence, formed during the Westphalian period, comprises mudstone, siltstone, sandstone, coal, ironstone and ferricrete—a combination of strata that made this region a centre of industrial activity from the eighteenth century onwards. The presence of coal and iron ore in the underlying rocks directly shaped the character and function of structures like Genwen Engine House.
Engine houses were essential to mining operations, housing the steam engines that powered pumping and winding machinery in collieries and ironworks. Such buildings typically employed robust stone or brick construction to support heavy equipment and withstand the vibration of industrial machinery. The engine house at Genwen represents this widespread Welsh industrial heritage, reflecting the region's dependence on mineral extraction and processing during the industrial period.
The monument is protected by Cadw, the Welsh heritage authority, under reference CM263, recognising its importance as a surviving structure from Wales's industrial past. Engine houses of this type are relatively scarce survivals, as many were demolished or substantially altered following the decline of coal and iron production in the twentieth century. Genwen Engine House thus remains a tangible record of the technical and industrial development that transformed South Wales.
Genwen Engine House is a scheduled monument protected by Cadw under reference CM263. View the official record →
Genwen Engine House is a post-medieval and modern engine house located in Wales, situated above bedrock of the South Wales Upper Coal Measures Formation. It is designated a Scheduled Ancient Monument by Cadw under reference CM263.
Genwen Engine House dates from the post medieval/modern period, and is classified as a engine house. It is one of over 32,000 scheduled monuments protected across the UK.
Genwen Engine House 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 CM263.
Several scheduled monuments lie within 10 km, including Tooth Cave, Llethrid (8.8 km), Pen-y-Crug Round Barrow (8.9 km), Cat Hole Cave (9.6 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Genwen Engine House'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.
Genwen Engine House stands on South Wales Upper Coal Measures Formation, bedrock that formed in the Westphalian. The rock here is mudstone, siltstone, sandstone, coal, ironstone and ferricrete.