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Mynydd Myddfai ring cairn is a prehistoric ring cairn located in Wales and protected by Cadw under reference CM346. Ring cairns of this type typically date to the Bronze Age and comprise a circular or near-circular bank of stones surrounding an open or partially filled central area. They are believed to have served ritual or ceremonial functions, though their exact purpose remains uncertain. Their distribution across upland regions suggests they held particular significance for prehistoric communities occupying these landscapes.
The monument sits on bedrock comprising Ludlow Rocks, an undifferentiated sequence of mudstone, siltstone and sandstone formed during the Ludlow epoch of the Silurian period, around 425 million years ago. This geology would have influenced both the character of the surrounding terrain and the availability of stone for the cairn's construction. The upland setting typical of such monuments reflects Bronze Age use of moorland and higher ground for burial and ceremonial purposes.
Ring cairns remain amongst the most enigmatic monuments of Bronze Age Britain and Wales. Unlike more elaborate barrows, their lack of obvious burial structures and variable preservation makes interpretation challenging. Mynydd Myddfai contributes to understanding how prehistoric Welsh communities marked and used their landscape, and its protected status recognises its archaeological and cultural significance within the broader heritage of the region.
Mynydd Myddfai ring cairn is a scheduled monument protected by Cadw under reference CM346. View the official record →
Mynydd Myddfai ring cairn is a prehistoric ring cairn located in Wales and protected by Cadw under reference CM346.
Mynydd Myddfai ring cairn dates from the prehistoric period, and is classified as a ring cairn. It is one of over 32,000 scheduled monuments protected across the UK.
Mynydd Myddfai ring 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 CM346.
Several scheduled monuments lie within 10 km, including Garn Las platform cairn (5.5 km), Stone Setting on Waun Llwyd (5.7 km), Twyn yr Esgair Settlement (6.4 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Mynydd Myddfai ring 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.
Mynydd Myddfai ring cairn stands on Ludlow Rocks (Undifferentiated), bedrock that formed in the Ludlow. The rock here is mudstone, siltstone and sandstone.