© Mapbox · © OpenStreetMap contributors · Boundary data © Cadw
Mynydd Llangyndeyrn Round Cairns is a prehistoric standing stone located in Wales, situated on bedrock of Dinantian age limestone interspersed with sandstone and argillaceous rocks. This geological foundation of Mississippian formation provides the local stone from which the monument was constructed, reflecting the typical Bronze Age practice of building from readily available materials. The site is protected by Cadw, the Welsh heritage organisation, under the reference CM203.
The standing stone represents a funerary or territorial marker characteristic of Wales' prehistoric landscape. Such monuments were often erected on elevated terrain, and the Mynydd location indicates placement on higher ground where the stone would have been visually prominent in the surrounding countryside. The association with round cairns suggests a complex of related burial or ceremonial features, typical of Bronze Age burial practices in upland Wales.
The preservation of this monument at Mynydd Llangyndeyrn reflects the enduring nature of standing stones in the Welsh landscape. Despite millennia of land use change, including pastoral farming on the upland terrain, the stone has remained a fixed reference point. Its formal protection acknowledges the archaeological significance of this Bronze Age site and its contribution to understanding prehistoric settlement patterns and ritual practices in Wales.
Mynydd Llangyndeyrn Round Cairns is a scheduled monument protected by Cadw under reference CM203. View the official record →
Mynydd Llangyndeyrn Round Cairns is a prehistoric standing stone located in Wales, situated on bedrock of Dinantian age limestone interspersed with sandstone and argillaceous rocks. It is designated a Scheduled Ancient Monument by Cadw under reference CM203.
Mynydd Llangyndeyrn Round Cairns dates from the prehistoric period, and is classified as a standing stone. It is one of over 32,000 scheduled monuments protected across the UK.
Mynydd Llangyndeyrn Round Cairns 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 CM203.
Several scheduled monuments lie within 10 km, including Standing Stone NE of Halfway House (2.9 km), Remains of Blast Furnace at Pont Henry (3.9 km), Gwempa Standing Stone (4 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Mynydd Llangyndeyrn Round Cairns'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.
Mynydd Llangyndeyrn Round Cairns stands on Dinantian Rocks (Undifferentiated), bedrock that formed in the Mississippian. The rock here is limestone with subordinate sandstone and argillaceous rocks.