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Maes-Gwyn Castle Mound is a prehistoric mound situated in Wales and protected by Cadw under reference DE128. The monument rises from bedrock composed of Llandovery rocks—undifferentiated mudstone, siltstone and sandstone deposited during the Llandovery period. This geology of softer sedimentary strata would have shaped both the landscape visible to its builders and the practical constraints of constructing and maintaining the earthwork over centuries.
The mound represents a distinctive form of prehistoric settlement or ceremonial site. Its position on this particular geology means the builders would have worked with locally available materials, likely incorporating the weathered stone and clay naturally exposed across the landscape. The Llandovery bedrock, prone to erosion and weathering, would have influenced how the mound's slopes formed and changed over time.
Today Maes-Gwyn Castle Mound survives as a substantial earthwork testament to prehistoric activity in this region of Wales. Its preservation under Cadw's guardianship ensures continued protection of this archaeological resource, allowing future investigation of the site's character, date and purpose through careful study of its form and the finds recovered from its immediate surroundings.
Maes-Gwyn Castle Mound is a scheduled monument protected by Cadw under reference DE128. View the official record →
Maes-Gwyn Castle Mound is a prehistoric mound situated in Wales and protected by Cadw under reference DE128.
Maes-Gwyn Castle Mound dates from the prehistoric period, and is classified as a mound. It is one of over 32,000 scheduled monuments protected across the UK.
Maes-Gwyn Castle Mound 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 DE128.
Several scheduled monuments lie within 10 km, including Y Foelas Castle Mound (0.7 km), Pont Newydd (Northern) (1.1 km), Pont Newydd (Southern) (1.2 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Maes-Gwyn Castle Mound'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.
Maes-Gwyn Castle Mound stands on Llandovery Rocks (Undifferentiated), bedrock that formed in the Llandovery. The rock here is mudstone, siltstone and sandstone.