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Afon Disgynfa Cairn is a prehistoric round cairn located in Wales and protected by Cadw under the reference MG264. The monument sits upon bedrock composed of Caradoc Rocks, a sequence of mudstone, siltstone and sandstone deposited during the Caradocian period. These sedimentary layers form the solid geological foundation beneath the accumulated stones of the cairn itself.
Round cairns of this type typically date to the Bronze Age, serving as burial monuments that would have held central grave deposits beneath their stony mounds. The Caradoc Rocks underlying the site represent a widespread geological formation across mid-Wales, providing local stone sources that Neolithic and Bronze Age communities would have utilised for monument construction. The specific character of the bedrock at Afon Disgynfa—with its mixture of firmer sandstone and softer mudstones—would have influenced both the availability and working properties of material used in building the cairn.
This monument remains one of many prehistoric burial structures scattered across the Welsh landscape, with its preservation under Cadw's protection ensuring continued study of its archaeological significance and the Bronze Age societies that erected it.
Afon Disgynfa Cairn is a scheduled monument protected by Cadw under reference MG264. View the official record →
Afon Disgynfa Cairn is a prehistoric round cairn located in Wales and protected by Cadw under the reference MG264.
Afon Disgynfa Cairn 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.
Afon Disgynfa 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 MG264.
Several scheduled monuments lie within 10 km, including Carnedd Das Eithin Round Cairn (6.1 km), Bwlch Sych round cairn (7.4 km), Siglem Las conjoined round cairns (7.6 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Afon Disgynfa 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.
Afon Disgynfa Cairn stands on Caradoc Rocks (Undifferentiated), bedrock that formed in the Caradocian. The rock here is mudstone, siltstone and sandstone.