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Greenfield Valley Mills is a post-medieval and modern watermill site protected as a scheduled monument by Cadw. Located in Wales, the mills were constructed to exploit the reliable water power provided by local watercourses flowing across the underlying geology. The bedrock of Millstone Grit Group—composed of mudstone, siltstone and sandstone formed during the Namurian period—created a landscape suited to water-powered industry, with its varied strata providing both stable foundations and the topography necessary for mill operations.
The site represents the industrial heritage of post-medieval Wales, when water mills were essential facilities for grinding grain and processing other materials. The combination of local geology and water resources made Greenfield Valley an attractive location for such enterprises. The Millstone Grit itself, particularly the sandstone elements, would have been valued locally for millstones and grinding equipment.
The monument's protection under Cadw reference FL160 reflects its significance as a record of Wales's industrial past. The physical remains of the mills, set within the distinctive landscape carved from Namurian sediments, preserve evidence of the engineering adaptations made to harness water power and the economic activities that sustained rural communities through successive centuries of development.
Greenfield Valley Mills is a scheduled monument protected by Cadw under reference FL160. View the official record →
Greenfield Valley Mills is a post-medieval and modern watermill site protected as a scheduled monument by Cadw. It is designated a Scheduled Ancient Monument by Cadw under reference FL160.
Greenfield Valley Mills dates from the post medieval/modern period, and is classified as a watermill. It is one of over 32,000 scheduled monuments protected across the UK.
Greenfield Valley Mills 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 FL160.
Several scheduled monuments lie within 10 km, including Round Barrow 180m E of Mwccwd (6.4 km), Bryn y Cwm Mound & Bailey Castle (7.2 km), Hen-y-Fail Round Barrow (7.2 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Greenfield Valley Mills'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.
Greenfield Valley Mills stands on Millstone Grit Group [See Also Migr], bedrock that formed in the Namurian. The rock here is mudstone, siltstone and sandstone.