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Carreg-y-llech is a prehistoric standing stone located in Wales and protected by Cadw as a scheduled ancient monument under reference FL207. The monument stands upon bedrock of the Millstone Grit Group, a geological formation of Namurian age comprising mudstone, siltstone and sandstone. This solid substrate would have provided the stable foundation necessary for erecting and maintaining the stone through millennia.
Standing stones such as Carreg-y-llech were typically raised during the Bronze Age or earlier prehistoric periods, serving purposes that remain incompletely understood. They may have functioned as territorial markers, gathering points for communities, or sites of ritual significance. The survival of such monuments across the Welsh landscape testifies to the considerable effort invested in their construction and the cultural importance they held.
The Millstone Grit bedrock exposed across this region of Wales reflects ancient deltaic depositional environments. The durable nature of these Namurian rocks would have made them suitable for quarrying and shaping, and their prevalence in the local landscape may have influenced the choice of stone type for the monument itself. Carreg-y-llech thus remains embedded within both the prehistoric past and the geological history of its setting.
Carreg-y-llech standing stone is a scheduled monument protected by Cadw under reference FL207. View the official record →
Carreg-y-llech is a prehistoric standing stone located in Wales and protected by Cadw as a scheduled ancient monument under reference FL207.
Carreg-y-llech 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.
Carreg-y-llech 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 FL207.
Several scheduled monuments lie within 10 km, including Nant Mill Wood Shaft Mounds (8.5 km), Abersychnant Cairn (8.8 km), Offa's Dyke: Section in Plas Power Park (9.2 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Carreg-y-llech 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.
Carreg-y-llech standing stone stands on Millstone Grit Group [See Also Migr], bedrock that formed in the Namurian. The rock here is mudstone, siltstone and sandstone.