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Y Gaer Defended Enclosure is a prehistoric defended settlement located in Wales, positioned on bedrock of the South Wales Upper Coal Measures Formation. This geology, formed during the Westphalian period, comprises mudstone, siltstone, sandstone, coal, ironstone and ferricrete—materials that would have presented both opportunities and constraints for Iron Age or Bronze Age communities constructing defensive earthworks on this site.
The enclosure belongs to a widespread tradition of defended settlements across Britain during the prehistoric period, typically comprising a substantial bank, ditch or palisade surrounding a domestic settlement area. Such fortifications served protective and territorial functions, marking the boundaries of community lands and providing security during periods of inter-tribal conflict or cattle raiding common to prehistoric societies.
Y Gaer Defended Enclosure is now protected by Cadw, the Welsh Historic Monuments organisation, under the reference CM384. This statutory protection ensures the survival of the archaeological evidence contained within the monument, preserving the earthwork remains and any subsurface deposits that continue to hold information about the lifeways and settlement patterns of Wales's prehistoric inhabitants.
Y Gaer Defended Enclosure is a scheduled monument protected by Cadw under reference CM384. View the official record →
Y Gaer Defended Enclosure is a prehistoric defended settlement located in Wales, positioned on bedrock of the South Wales Upper Coal Measures Formation. It is designated a Scheduled Ancient Monument by Cadw under reference CM384.
Y Gaer Defended Enclosure dates from the prehistoric period, and is classified as a enclosure - defensive. It is one of over 32,000 scheduled monuments protected across the UK.
Y Gaer 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 CM384.
Several scheduled monuments lie within 10 km, including The Bulwark, Llanmadoc Hill (8.8 km), Llanmadoc Hill, cairn on E end of (8.9 km), Llanmadoc Hill, cairn on W end of (9.3 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Y Gaer 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.
Y Gaer Defended Enclosure stands on South Wales Upper Coal Measures Formation, bedrock that formed in the Westphalian. The rock here is mudstone, siltstone, sandstone, coal, ironstone and ferricrete.