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Carreg Leidr is a prehistoric standing stone located in Wales and protected as an ancient monument by Cadw under reference AN067. The stone rises from bedrock composed of Ordovician mudstone, siltstone and sandstone, geological formations laid down some 485 to 444 million years ago when this region lay beneath a shallow sea. The Ordovician rocks that underlie the monument represent some of the oldest solid geology in Britain.
Standing stones such as Carreg Leidr were erected during the Neolithic and Bronze Age periods, their purposes ranging from territorial markers and burial monuments to astronomical alignments and gathering places. The specific role of this stone within its local landscape and community cannot be determined without excavation, though its prominent positioning reflects the deliberate choices made by those who raised it. The enduring stability of the Ordovician bedrock has allowed the stone to remain in place for thousands of years.
The monument survives as a testament to prehistoric engineering and social organisation. Its preservation through Cadw's stewardship ensures that this standing stone continues to mark the Welsh landscape much as it has done since antiquity, offering modern visitors a tangible connection to the lives and concerns of Britain's earliest monument builders.
Carreg Leidr is a scheduled monument protected by Cadw under reference AN067. View the official record →
Carreg Leidr is a prehistoric standing stone located in Wales and protected as an ancient monument by Cadw under reference AN067.
Carreg Leidr 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.
Carreg Leidr 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 AN067.
Several scheduled monuments lie within 10 km, including Llech Golman (1.3 km), Maen Addwyn (1.7 km), Bodafon Mountain Early Medieval Homestead (2.5 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Carreg Leidr'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.
Carreg Leidr stands on Ordovician Rocks (Undifferentiated), bedrock that formed in the Ordovician. The rock here is mudstone, siltstone and sandstone.