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Carn Besi Burial Chamber is a prehistoric chambered tomb situated in Wales, built upon bedrock of Arenig Rocks composed of mudstone, siltstone and sandstone. These Arenigian-age rocks, among the oldest stone formations in Britain, provided the natural foundation for this ancient monument. The site lies within terrain shaped by these hard sedimentary layers, which outcrop prominently across much of the Welsh landscape and would have influenced both the tomb's construction and the routes taken by Neolithic communities in this region.
The burial chamber represents the architectural traditions of Wales's Neolithic period, when communal tombs served as focal points for ceremonial and mortuary practices. Such chambers typically contained multiple burials accumulated over generations, reflecting the social importance of these structures to their builders. The construction required considerable effort, moving stone blocks to create a covered chamber—a testament to the organized labour and shared purpose that characterised these early farming communities.
Today, Carn Besi is protected as a scheduled monument under Cadw, the Welsh Heritage Monuments service, registered under reference CM049. This designation reflects its archaeological significance and ensures its preservation. The monument survives as physical evidence of Neolithic Wales, offering insight into the beliefs, social organization and landscape use of people who lived thousands of years before the recorded history of Britain.
Carn Besi Burial Chamber is a scheduled monument protected by Cadw under reference CM049. View the official record →
Carn Besi Burial Chamber is a prehistoric chambered tomb situated in Wales, built upon bedrock of Arenig Rocks composed of mudstone, siltstone and sandstone. It is designated a Scheduled Ancient Monument by Cadw under reference CM049.
Carn Besi Burial Chamber dates from the prehistoric period, and is classified as a chambered tomb. It is one of over 32,000 scheduled monuments protected across the UK.
Carn Besi Burial Chamber 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 CM049.
Several scheduled monuments lie within 10 km, including Defended Enclosure 300m NW of Closbach (5.9 km), Inscribed Stone in outer face of wall of St Michael's Church (now in Llandissilio Church) (6.9 km), Gelli Diogyn Hillfort (7.5 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Carn Besi Burial Chamber'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.
Carn Besi Burial Chamber stands on Arenig Rocks (Undifferentiated), bedrock that formed in the Arenigian. The rock here is mudstone, siltstone and sandstone.