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Carn Fach Bugeilyn is a prehistoric round cairn located in Wales and protected by Cadw under reference MG113. The monument sits upon bedrock composed of Ashgill Rocks, a sequence of mudstone, siltstone and sandstone formations laid down during the Ashgill period of the Ordovician. This solid geological foundation provided accessible stone for the cairn's construction, with weathered material from the local bedrock suitable for gathering and stacking.
Round cairns of this type typically date to the Bronze Age and served as burial monuments for prominent individuals or family groups. The structure would originally have been considerably more substantial than its current state, likely standing several metres high and visible across considerable distances in the Welsh landscape. Over millennia, stone robbing, ploughing and natural erosion have significantly reduced its height and spread.
The monument's survival and protection reflect its archaeological significance as a marker of prehistoric settlement and burial practice in this region. Despite extensive landscape change across Wales, Carn Fach Bugeilyn remains an important record of Bronze Age funerary traditions and the relationship between early communities and their local environment.
Carn Fach Bugeilyn is a scheduled monument protected by Cadw under reference MG113. View the official record →
Carn Fach Bugeilyn is a prehistoric round cairn located in Wales and protected by Cadw under reference MG113.
Carn Fach Bugeilyn 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.
Carn Fach Bugeilyn 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 MG113.
Several scheduled monuments lie within 10 km, including Carreg Wen Prehistoric Standing Stone (1.8 km), Cairns on Pen Plynlimon-Arwystli (2.8 km), Nant yr Eira Prehistoric Copper Mines & 19th Century Lead Mine (3.1 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Carn Fach Bugeilyn'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 Fach Bugeilyn stands on Ashgill Rocks (Undifferentiated), bedrock that formed in the Ashgill. The rock here is mudstone, siltstone and sandstone.