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Banc Llechwedd-mawr round cairns is a prehistoric round cairn located in Wales and protected by Cadw under reference MG307. Round cairns of this type were constructed during the Bronze Age as burial monuments, typically comprising heaped stone covering one or more cremated or inhumed individuals. The monument's location on bedrock composed of Ashgill rocks—undifferentiated mudstone, siltstone and sandstone—would have provided readily available stone for its construction, with material quarried or gathered from the immediate landscape.
The Ashgill formation, dating to the Ordovician period, forms distinctive upland terrain across Wales. This geological substrate would have influenced both the practical construction of the cairn and its visual prominence within the local topography. The site's preservation under Cadw's protection reflects its significance as evidence of Bronze Age burial practices and land use in Wales.
The monument survives as a tangible record of prehistoric funerary tradition and demonstrates how ancient communities adapted construction techniques to local geological resources. Such cairns are fundamental to understanding settlement patterns, social organisation and ritual practices in Bronze Age Wales.
Banc Llechwedd-mawr round cairns is a scheduled monument protected by Cadw under reference MG307. View the official record →
Banc Llechwedd-mawr round cairns is a prehistoric round cairn located in Wales and protected by Cadw under reference MG307.
Banc Llechwedd-mawr round cairns 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.
Banc Llechwedd-mawr 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 MG307.
Several scheduled monuments lie within 10 km, including Garn Lwyd Round Cairn & Standing Stone (6.9 km), Dinas SW of Aber-Peithnant (7.3 km), Llys Arthur, Dyffryn-Castell (7.4 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Banc Llechwedd-mawr 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.
Banc Llechwedd-mawr round cairns stands on Ashgill Rocks (Undifferentiated), bedrock that formed in the Ashgill. The rock here is mudstone, siltstone and sandstone.