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St-y-Nyll Round Barrow is a prehistoric round barrow situated in Wales and protected as a scheduled monument under Cadw reference GM204. The monument sits upon bedrock of the Lias Group, a geological formation laid down during the Aalenian period and comprising mudstone, siltstone, limestone and sandstone. This stable foundation would have provided suitable ground for the barrow's construction during the Bronze Age.
Round barrows of this type typically served as burial monuments for prominent members of prehistoric communities, their earthen or stone mounds raised over one or more inhumation deposits. The barrow's position on Lias bedrock is characteristic of burial sites sited across varied terrain; such geology would not have impeded construction, though the underlying stone may have been encountered during any central burial pit or chamber.
The scheduling of St-y-Nyll Round Barrow reflects its importance as a surviving example of Bronze Age funerary architecture and as a record of prehistoric settlement patterns and social practice. Its preservation allows study of both the monument itself and its relationship to the wider archaeological landscape of Wales, contributing to understanding of how Bronze Age communities used and shaped their environment.
St-y-Nyll Round Barrow is a scheduled monument protected by Cadw under reference GM204. View the official record →
St-y-Nyll Round Barrow is a prehistoric round barrow situated in Wales and protected as a scheduled monument under Cadw reference GM204.
St-y-Nyll Round Barrow dates from the prehistoric period, and is classified as a round barrow. It is one of over 32,000 scheduled monuments protected across the UK.
St-y-Nyll Round Barrow 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 GM204.
Several scheduled monuments lie within 10 km, including Doghill Moated Site, Dyffryn (6.4 km), Walterston ringwork (7.8 km), Llanvithyn Camp (7.9 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of St-y-Nyll Round Barrow'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.
St-y-Nyll Round Barrow stands on Lias Group, bedrock that formed in the Aalenian. The rock here is mudstone, siltstone, limestone and sandstone.