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Twr Gwyn Mawr Round Cairn is a prehistoric burial monument located in Wales and protected by Cadw under reference MG292. The cairn is constructed on bedrock comprising Wenlock rocks of undifferentiated character, a geological formation dating to the Wenlock period and composed primarily of mudstone, siltstone and sandstone. This stable substrate provided a solid foundation for the monument's construction and has influenced its survival into the modern era.
Round cairns of this type typically date to the Bronze Age and served as burial structures for individuals or small family groups, though this example may also relate to earlier Neolithic practices. The monument's position on Wenlock bedrock, characteristic of upland or marginal terrain, is typical of cairn distribution across Wales, where such monuments often mark high points in the landscape and remain visible markers of prehistoric settlement and burial practice.
The cairn's preservation and scheduling under Cadw reflect its significance as evidence of Bronze Age funerary customs and landscape use. The site contributes to understanding of prehistoric Wales and the relationship between early communities and their geological environment.
Twr Gwyn Mawr Round Cairn is a scheduled monument protected by Cadw under reference MG292. View the official record →
Twr Gwyn Mawr Round Cairn is a prehistoric burial monument located in Wales and protected by Cadw under reference MG292.
Twr Gwyn Mawr Round 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.
Twr Gwyn Mawr Round 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 MG292.
Several scheduled monuments lie within 10 km, including Esgair Draenllwyn Round Cairn I (1.7 km), Bryn y Gadair round cairn (4.8 km), Y Ffridd Round Barrow (6.1 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Twr Gwyn Mawr Round 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.
Twr Gwyn Mawr Round Cairn stands on Wenlock Rocks (Undifferentiated), bedrock that formed in the Wenlock. The rock here is mudstone, siltstone and sandstone.