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Maen Llwyd in Glynllifon is a Bronze Age standing stone located in Wales and protected by Cadw under reference CN143. The monument rises from bedrock composed of Neoproterozoic felsic tuff, an extrusive volcanic rock formed in ancient times. This geological foundation has provided a stable platform for the stone throughout its millennia of standing.
The stone represents a widespread tradition of monumental stone-setting that characterised Bronze Age communities across Britain and Ireland, typically dating between approximately 2200 and 700 BCE. Such standing stones often marked significant locations within the landscape, serving purposes that may have included territorial definition, ceremonial gathering, burial commemoration or astronomical observation. The specific geology of the Glynllifon locality—ancient volcanic bedrock—was commonly selected by Bronze Age peoples for the placement of such monuments.
Today Maen Llwyd remains a visible landmark within the Welsh landscape, its persistence through successive millennia testament to its original construction. The monument's protection reflects its importance as a physical survival of Bronze Age settlement patterns and belief systems. The stone continues to anchor the modern understanding of prehistoric land use and cultural significance in this region of Wales.
Maen Llwyd in Glynllifon is a scheduled monument protected by Cadw under reference CN143. View the official record →
Maen Llwyd in Glynllifon is a Bronze Age standing stone located in Wales and protected by Cadw under reference CN143.
Maen Llwyd in Glynllifon dates from the bronze age period, and is classified as a standing stone. It is one of over 32,000 scheduled monuments protected across the UK.
Maen Llwyd in Glynllifon 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 CN143.
Several scheduled monuments lie within 10 km, including Burnt Mound East of Pen-y-Gaer (8.7 km), Pen y Gaer Camp (8.8 km), Hut Group & Field System North West of Tyddyn Mawr (previously known as Hut Group NW of Tyddyn Mawr) (9.2 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Maen Llwyd in Glynllifon'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.
Maen Llwyd in Glynllifon stands on Unnamed Extrusive Rocks, Neoproterozoic, bedrock that formed in the Neoproterozoic. The rock here is felsic tuff.