© Mapbox · © OpenStreetMap contributors · Boundary data © Cadw
Cerrig Blaencletwr-Fawr Round Cairn is a prehistoric round cairn located in Wales and protected as a scheduled ancient monument under Cadw reference CD237. The monument consists of a mound of stones raised over bedrock composed of Ashgill rocks—mudstone, siltstone and sandstone formations from the Ashgill epoch. Such cairns typically date to the Bronze Age and often served as burial monuments, though some may be earlier Neolithic constructions. The specific geological substrate of mudstone and siltstone would have required considerable effort to excavate, making the visible stone mound a testament to the labour invested in its construction.
Round cairns across Wales share common characteristics of circular stone heaps, frequently containing central burial chambers or cists. The monument's survival to the present day reflects both its sturdy construction and the protective measures afforded by its scheduled status. The local bedrock geology would have provided ready sources of stone for cairn building, though the builders may have selected material selectively for size and suitability. The cairn's preservation allows study of prehistoric funerary practices and settlement patterns in its landscape.
Cerrig Blaencletwr-Fawr Round Cairn is a scheduled monument protected by Cadw under reference CD237. View the official record →
Cerrig Blaencletwr-Fawr Round Cairn is a prehistoric round cairn located in Wales and protected as a scheduled ancient monument under Cadw reference CD237.
Cerrig Blaencletwr-Fawr Round Cairn dates from the prehistoric period, and is classified as a round cairn. It is one of over 32,000 scheduled monuments protected across the UK.
Cerrig Blaencletwr-Fawr Round Cairn 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 CD237.
Several scheduled monuments lie within 10 km, including Cwmsymlog Lead Mine (8.8 km), Standing Stone c. 500m SW of Llyn Pendam (9.1 km), Standing Stones c.600m NE of Cwmdarren (9.1 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Cerrig Blaencletwr-Fawr Round Cairn'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.
Cerrig Blaencletwr-Fawr Round Cairn stands on Ashgill Rocks (Undifferentiated), bedrock that formed in the Ashgill. The rock here is mudstone, siltstone and sandstone.