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Derwlwyn Coppice Hillfort is a prehistoric hillfort located in Wales and protected by Cadw under reference MG228. The monument sits upon bedrock composed of Ashgill Rocks—undifferentiated mudstone, siltstone and sandstone laid down in the Ashgill age—which would have provided a firm foundation for construction whilst offering limited natural stone suitable for rampart building. This geological circumstance shaped the hillfort's defences, which likely relied more heavily on timber palisades and earthwork than on substantial stone fortifications typical of sites built on other geological formations.
Hillforts of this type were built across Wales during the later prehistoric period, serving as defended settlements, refuges or centres of local authority. The coppice woodland now covering the site reflects land use changes over centuries, obscuring the original topography and any banks or ditches that once defined the monument's perimeter and internal divisions.
Derwlwyn Coppice Hillfort remains an important record of Iron Age settlement patterns in Wales, though its precise chronology and scale await systematic investigation. The site's survival, despite post-medieval woodland management, preserves archaeological deposits that may yet yield evidence of the community that built and occupied this hillfort.
Derwlwyn Coppice Hillfort is a scheduled monument protected by Cadw under reference MG228. View the official record →
Derwlwyn Coppice Hillfort is a prehistoric hillfort located in Wales and protected by Cadw under reference MG228.
Derwlwyn Coppice Hillfort dates from the prehistoric period, and is classified as a hillfort. It is one of over 32,000 scheduled monuments protected across the UK.
Derwlwyn Coppice Hillfort 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 MG228.
Several scheduled monuments lie within 10 km, including Cwrt y Person Moated Site (6.7 km), Pen-llys Hillfort (6.9 km), Broniarth Hill Camp (8.5 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Derwlwyn Coppice Hillfort'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.
Derwlwyn Coppice Hillfort stands on Ashgill Rocks (Undifferentiated), bedrock that formed in the Ashgill. The rock here is mudstone, siltstone and sandstone.