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Caer Du is an unknown enclosure located in Wales and protected by Cadw under reference RD030. The monument sits upon bedrock of Wenlock formation, comprising undifferentiated mudstone, siltstone and sandstone deposited during the Wenlock period. These Palaeozoic rocks provide a naturally stable foundation, typical of Welsh upland terrain where such enclosures are commonly found.
The specific form and date of Caer Du remain uncertain, reflecting the incomplete archaeological record for many Welsh enclosed sites. Such enclosures may have served defensive, pastoral or administrative functions, though without excavation or detailed survey the monument's original purpose cannot be determined. The name, incorporating the Welsh word 'caer' (fort or stronghold), suggests a tradition of perceiving the site as fortified, though this interpretation may post-date its actual construction and use.
The enclosure is preserved within its landscape of ancient geology, where weathered Wenlock rocks have shaped settlement patterns and land use for millennia. Its protection by Cadw recognises the archaeological importance of such monuments, even where their chronology and function remain undocumented. The site contributes to understanding the distribution and diversity of enclosed settlements across medieval and earlier Wales.
Caer Du is a scheduled monument protected by Cadw under reference RD030. View the official record →
Caer Du is an unknown enclosure located in Wales and protected by Cadw under reference RD030.
Caer Du dates from the unknown period, and is classified as a enclosure. It is one of over 32,000 scheduled monuments protected across the UK.
Caer Du 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 RD030.
Several scheduled monuments lie within 10 km, including Castell Cae-Maerdy Castle Mound (6.3 km), Cwrt Llechryd moated site (6.6 km), Fforest Wood Mound & Bailey Castle (7.7 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Caer Du'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.
Caer Du stands on Wenlock Rocks (Undifferentiated), bedrock that formed in the Wenlock. The rock here is mudstone, siltstone and sandstone.