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Carn Wen is a prehistoric platform cairn located in Wales and protected as a Scheduled Ancient Monument by Cadw under reference RD206. Platform cairns of this type typically date to the Neolithic or Bronze Age and served a variety of ritual and burial functions within their communities. The monument sits on bedrock composed of Llandovery Rocks—undifferentiated Llandovery sandstone and conglomerate strata interbedded together—geological formations that extend back to the Llandovery period of the Palaeozoic era.
The distinctive landscape geology underlying Carn Wen would have shaped both the monument's construction and its visibility within the surrounding terrain. The local sandstone and conglomerate provided suitable stone for cairn building, and the underlying bedrock's character influenced water drainage and the stability of the completed structure. Platform cairns typically consist of a stone platform, often enclosed or delimited by a kerb, on which burial deposits or ritual deposits were made.
Carn Wen remains an important record of prehistoric monumentality in Wales, preserving evidence of ancient land use, territorial marking, and ceremonial practice. Its statutory protection ensures the survival of this archaeological resource for future study and interpretation.
Carn Wen cairn is a scheduled monument protected by Cadw under reference RD206. View the official record →
Carn Wen is a prehistoric platform cairn located in Wales and protected as a Scheduled Ancient Monument by Cadw under reference RD206.
Carn Wen cairn dates from the prehistoric period, and is classified as a platform cairn. It is one of over 32,000 scheduled monuments protected across the UK.
Carn Wen 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 RD206.
Several scheduled monuments lie within 10 km, including Nant y Llyn cist (5.6 km), Nant y Llyn Stone Row (5.7 km), Nant Cletwr barrow (6 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Carn Wen 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.
Carn Wen cairn stands on Llandovery Rocks (Undifferentiated), bedrock that formed in the Llandovery. The rock here is sandstone and conglomerate, interbedded.