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Ring Cairn South of Twyn Blaennant is a prehistoric round cairn located in Wales. The monument sits upon bedrock of the South Wales Upper Coal Measures Formation, a sequence of mudstone, siltstone, sandstone, coal, ironstone and ferricrete laid down during the Westphalian period. This geology has shaped both the landscape and the materials available for construction at the site.
The cairn takes the form characteristic of Bronze Age funerary monuments, constructed as a circular mound of stone. Such ring cairns served as burial places and were often situated on higher ground to command the surrounding terrain, visible markers of significant family or community status. The specific topography of the site, with its exposure of harder ironstone and ferricrete within the local bedrock, would have influenced the choice and procurement of stone for the monument's construction.
The cairn is protected as a scheduled ancient monument under Cadw reference GM368, Wales's heritage protection authority. This designation recognises its archaeological significance as evidence of prehistoric settlement and burial practice in the region. The site contributes to understanding Bronze Age communities and their relationship with the upland landscape of South Wales.
Ring Cairn South of Twyn Blaennant is a scheduled monument protected by Cadw under reference GM368. View the official record →
Ring Cairn South of Twyn Blaennant is a prehistoric round cairn located in Wales. It is designated a Scheduled Ancient Monument by Cadw under reference GM368.
Ring Cairn South of Twyn Blaennant 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.
Ring Cairn South of Twyn Blaennant 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 GM368.
Several scheduled monuments lie within 10 km, including Darren Fawr Round Cairns (2.1 km), Rhos-Gwawr cairn cemetery (4.9 km), Remains of Iron Furnace at Cwmaman (5.4 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Ring Cairn South of Twyn Blaennant'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.
Ring Cairn South of Twyn Blaennant stands on South Wales Upper Coal Measures Formation, bedrock that formed in the Westphalian. The rock here is mudstone, siltstone, sandstone, coal, ironstone and ferricrete.