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Rhos-y-Beddau Stone Circle, Avenue and Cairn is a prehistoric ceremonial complex in Wales, comprising a stone circle, an associated avenue of stones, and a cairn. The monument sits on bedrock formed during the Silurian period, where a mafic igneous intrusion has created distinctive dark-coloured rock that the builders would have seen exposed in their landscape. This geological foundation influenced both the availability of stone for construction and the site's character as a place of ritual gathering.
The stone circle itself represents a monument type widely distributed across Bronze Age Britain and Ireland, typically erected between 2500 and 1500 BCE as focal points for ceremonial and communal activity. The addition of an avenue extending from the circle suggests a more elaborate design scheme, creating a formal processional route that would have structured movement through the site. Such avenues are characteristic of later prehistoric monument complexes, particularly in Wales and western Britain.
The cairn, another typical Bronze Age element, may have served as a burial marker or ritual mound associated with the circle's use and significance. The three components together create a unified archaeological landscape that reflects the considerable effort invested in monumentality during the later prehistoric period. The site is protected by Cadw, the Welsh heritage body responsible for safeguarding such important archaeological remains.
Rhos-y-Beddau Stone Circle, Avenue and Cairn is a scheduled monument protected by Cadw under reference MG032. View the official record →
Rhos-y-Beddau Stone Circle, Avenue and Cairn is a prehistoric ceremonial complex in Wales, comprising a stone circle, an associated avenue of stones, and a cairn. It is designated a Scheduled Ancient Monument by Cadw under reference MG032.
Rhos-y-Beddau Stone Circle, Avenue and Cairn dates from the prehistoric period, and is classified as a stone circle. It is one of over 32,000 scheduled monuments protected across the UK.
Rhos-y-Beddau Stone Circle, Avenue and 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 MG032.
Several scheduled monuments lie within 10 km, including Y Gribin Round Cairn (4.2 km), Ty Ucha Farmstead, Cwm Llech, Llangynog, Powys (6.1 km), Ty'n-y-Celyn Castle Mound (6.1 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Rhos-y-Beddau Stone Circle, Avenue and 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.
Rhos-y-Beddau Stone Circle, Avenue and Cairn stands on Unnamed Igneous Intrusion, Ordovician To Silurian, bedrock that formed in the Silurian. The rock here is mafic igneous-rock.