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Caer Pencraig Fort is a prehistoric hillfort located in Wales, occupying a naturally defensible position above bedrock of Lower Cambrian age. The sandstone and conglomerate layers beneath the site, interbedded and formed during the Early Cambrian period, would have provided a stable foundation for settlement and fortification. The hard, stratified nature of these ancient rocks would have offered both practical advantages for construction and natural outcrops that could be incorporated into defensive works typical of Iron Age hillforts.
The fort's position on this Cambrian bedrock reflects the strategic importance of elevated sites in prehistoric Wales. The geological substrate, exposed in places across the hillside, may have influenced the layout of ramparts and internal structures, following natural contours and rock outcrops to maximise defensive capability. Such sites commonly commanded views over surrounding territories, functioning as centres of authority and refuge during the late prehistoric period.
Caer Pencraig Fort is now protected under Cadw, the Welsh heritage conservation body, with the official reference CN195. This statutory protection ensures the preservation of this important prehistoric monument, allowing continued study of its structural form and its relationship to the natural landscape that shaped its construction and long-term occupation.
Caer Pencraig Fort is a scheduled monument protected by Cadw under reference CN195. View the official record →
Caer Pencraig Fort is a prehistoric hillfort located in Wales, occupying a naturally defensible position above bedrock of Lower Cambrian age. It is designated a Scheduled Ancient Monument by Cadw under reference CN195.
Caer Pencraig Fort dates from the prehistoric period, and is classified as a hillfort. It is one of over 32,000 scheduled monuments protected across the UK.
Caer Pencraig Fort 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 CN195.
Several scheduled monuments lie within 10 km, including Vivian Slate Quarry, Inclines, Walia & associated structures (6.7 km), Hut and Enclosure Near Mur-Moch (6.9 km), Dinorwic Quarry (6.9 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Caer Pencraig Fort'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 Pencraig Fort stands on Lower Cambrian Rocks (Undifferentiated), bedrock that formed in the Early Cambrian. The rock here is sandstone and conglomerate, interbedded.