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Gilfach y Dwn Fawr Defended Enclosure is a prehistoric hillfort situated in Wales. The site occupies ground underlain by Llandovery Rocks, a geological formation of mudstone, siltstone and sandstone dating from the Llandovery period. This mixed geology would have provided both challenges and resources to its prehistoric builders and inhabitants.
The defended enclosure represents a form of settlement and refuge characteristic of the Iron Age and earlier prehistoric periods in Wales. Such hillforts typically served multiple purposes: they functioned as defended settlements, provided security during periods of conflict, and may have held administrative or ceremonial significance within their communities. The choice of location would have offered natural defensive advantages and visibility across the surrounding landscape.
The monument is protected by Cadw, the Welsh Historic Monuments service, under reference CD269. This statutory protection recognises its archaeological importance and helps preserve the surviving earthworks and any subsurface deposits they contain for future research and public heritage value. The site remains an important record of prehistoric settlement patterns and social organisation in Wales.
Gilfach y Dwn Fawr Defended Enclosure is a scheduled monument protected by Cadw under reference CD269. View the official record →
Gilfach y Dwn Fawr Defended Enclosure is a prehistoric hillfort situated in Wales. It is designated a Scheduled Ancient Monument by Cadw under reference CD269.
Gilfach y Dwn Fawr Defended Enclosure dates from the prehistoric period, and is classified as a hillfort. It is one of over 32,000 scheduled monuments protected across the UK.
Gilfach y Dwn Fawr Defended Enclosure 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 CD269.
Several scheduled monuments lie within 10 km, including Garn Gron Round Cairn Cemetery (3.8 km), Y Garn Round Cairn (4.1 km), Gwar-castell, Round Cairn Pair 375m SE of (4.5 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Gilfach y Dwn Fawr Defended Enclosure'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.
Gilfach y Dwn Fawr Defended Enclosure stands on Llandovery Rocks (Undifferentiated), bedrock that formed in the Llandovery. The rock here is mudstone, siltstone and sandstone.