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Penmyarth Standing Stone is a prehistoric standing stone located in Wales and protected as an ancient monument by Cadw under reference BR133. The stone rises from bedrock of Lower Devonian age, comprising sandstone and conglomerate interbedded together, which was formed during the Early Devonian period. This geological foundation provided stable ground for the monument's erection in antiquity.
Standing stones of this type were typically raised during the Neolithic or Bronze Age, serving purposes that likely encompassed territorial marking, ritual significance, or commemoration of the dead. The monument's positioning on Lower Devonian rocks reflects the practical choice of Early communities to work with solid, naturally occurring geology that could support such substantial undertakings.
The stone remains a significant marker of prehistoric land use and cultural activity in Wales, preserving evidence of how ancient peoples engaged with their landscape and geology. Its survival to the present day, now under statutory protection, ensures continued study of the monument type and its role within early Welsh society.
Penmyarth Standing Stone is a scheduled monument protected by Cadw under reference BR133. View the official record →
Penmyarth Standing Stone is a prehistoric standing stone located in Wales and protected as an ancient monument by Cadw under reference BR133.
Penmyarth Standing Stone dates from the prehistoric period, and is classified as a standing stone. It is one of over 32,000 scheduled monuments protected across the UK.
Penmyarth Standing Stone 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 BR133.
Several scheduled monuments lie within 10 km, including Twr Pen-cyrn round cairns (5.8 km), Disgwylfa Tramroads (6.9 km), Iron Furnace SW of Clydach (7.8 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Penmyarth Standing Stone'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.
Penmyarth Standing Stone stands on Lower Devonian Rocks (Undifferentiated), bedrock that formed in the Early Devonian. The rock here is sandstone and conglomerate, interbedded.