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Caer Penrhos is a prehistoric hillfort situated in Wales, occupying high ground underlain by Llandovery sandstone and conglomerate bedrock. The site commands strategic views across the surrounding landscape, a location choice typical of Iron Age fortified settlements in Britain. The underlying geology of interbedded sandstone and conglomerate would have provided workable stone for rampart construction and domestic purposes, whilst the elevated terrain offered natural defensive advantages and enhanced visibility for communication and surveillance.
The hillfort's ramparts and internal structures reflect the architectural conventions of later prehistoric Wales, when such sites served as territorial centres, places of refuge, and focal points for community gatherings. The solid bedrock foundation beneath the site would have supported the construction of substantial defensive earthworks and the settlement structures within. Caer Penrhos remains a significant archaeological monument representing the organised societies that inhabited Wales during the Iron Age.
The site is protected by Cadw, the Welsh heritage body, under reference CD094, ensuring its preservation for future study and public understanding. The monument's survival on this Llandovery bedrock landscape contributes to our knowledge of prehistoric settlement patterns and defensive strategies in Wales, forming part of the broader record of hillforts distributed across the region during the late prehistoric period.
Caer Penrhos is a scheduled monument protected by Cadw under reference CD094. View the official record →
Caer Penrhos is a prehistoric hillfort situated in Wales, occupying high ground underlain by Llandovery sandstone and conglomerate bedrock. It is designated a Scheduled Ancient Monument by Cadw under reference CD094.
Caer Penrhos 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 Penrhos 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 CD094.
Several scheduled monuments lie within 10 km, including Gilfach-Hafel Camp (0.8 km), Defended Enclosure 500m N of Pen y Castell (1.7 km), Aberstrincell or Graiglas Limekilns (3.5 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Caer Penrhos'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 Penrhos stands on Llandovery Rocks (Undifferentiated), bedrock that formed in the Llandovery. The rock here is sandstone and conglomerate, interbedded.