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Bulwarks Prehistoric Enclosure is a hillfort located in Wales, protected as a scheduled ancient monument under Cadw reference MM093. The site occupies ground formed from Dinantian limestone interspersed with sandstone and argillaceous rocks, geology typical of the Mississippian period. This underlying strata would have determined both the defensive potential of the hilltop and the building materials available to its prehistoric inhabitants.
Hillforts of this type emerged during the Iron Age as centres of power and refuge, their ramparted enclosures commanding strategic views across surrounding landscape. The choice of this particular limestone-capped location reflects the practical considerations of prehistoric settlement: natural defensive strength, visible dominance, and access to stone for construction. The mixed bedrock geology would have created variable building conditions across the site.
As a scheduled monument under Cadw's protection, Bulwarks Prehistoric Enclosure remains an important record of Wales's Iron Age settlement patterns. The preservation of its structural earthworks allows study of prehistoric defensive architecture and territorial organisation. The site's geology continues to shape its character and archaeological potential, with the underlying limestone influencing drainage, vegetation and preservation conditions for any deposits within the enclosure.
Bulwarks Prehistoric Enclosure is a scheduled monument protected by Cadw under reference MM093. View the official record →
Bulwarks Prehistoric Enclosure is a hillfort located in Wales, protected as a scheduled ancient monument under Cadw reference MM093.
Bulwarks Prehistoric 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.
Bulwarks Prehistoric 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 MM093.
Several scheduled monuments lie within 10 km, including Heston Brake Long Barrow (5.2 km), Crick Medieval House (5.4 km), Portskewett Hill Roman Site (5.7 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Bulwarks Prehistoric 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.
Bulwarks Prehistoric Enclosure stands on Dinantian Rocks (Undifferentiated), bedrock that formed in the Mississippian. The rock here is limestone with subordinate sandstone and argillaceous rocks.