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Pencastell Hillfort is a prehistoric fortified settlement situated on elevated ground in Wales, strategically positioned to command views across the surrounding landscape. The site is constructed upon bedrock of Ashgill Rocks, a formation of mudstone, siltstone and sandstone deposited during the Ashgill period of the Ordovician. This underlying geology has shaped both the fort's foundation and the character of its defensive earthworks, which rise from a substrate of these ancient sedimentary rocks.
The hillfort displays the characteristic defensive architecture of Welsh prehistoric fortifications, relying on its elevated topography and constructed ramparts to control access and provide command of approaches. Such forts typically served multiple purposes: as permanent or seasonal settlements, gathering places for communities, and defensive strongholds during periods of conflict or instability. The site's defensive potential was enhanced by its natural situation on the Ashgill bedrock outcrop.
Pencastell Hillfort is protected as a scheduled monument under Cadw, the Welsh heritage monuments agency, and is registered under reference CM295. This formal protection recognises its archaeological significance as a surviving example of Iron Age and earlier prehistoric fortification practices in Wales. The monument remains an important witness to the settlement patterns and defensive strategies of ancient Welsh communities.
Pencastell Hillfort is a scheduled monument protected by Cadw under reference CM295. View the official record →
Pencastell Hillfort is a prehistoric fortified settlement situated on elevated ground in Wales, strategically positioned to command views across the surrounding landscape. It is designated a Scheduled Ancient Monument by Cadw under reference CM295.
Pencastell 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.
Pencastell 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 CM295.
Several scheduled monuments lie within 10 km, including Castell Mawr Mound and Bailey Castle (2 km), Crug Hywel Round Barrow (5 km), Pant-Glas Round Barrow (5.1 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Pencastell 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.
Pencastell Hillfort stands on Ashgill Rocks (Undifferentiated), bedrock that formed in the Ashgill. The rock here is mudstone, siltstone and sandstone.