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Caer-Dynni Burial Chamber is a prehistoric chambered long cairn built on bedrock comprising Tremadoc Rocks of mudstone, siltstone and sandstone. The monument belongs to the tradition of Neolithic monumental construction that flourished across Wales and the broader British Isles during the fourth and third millennia before the present. These communal burial structures served multiple functions within their societies, acting as focal points for ritual activity and territorial identity across generations.
The chamber itself would have been constructed from stone slabs quarried from the local geology, creating a megalithic structure designed to be both permanent and visible across the surrounding landscape. The long cairn mound that covers the burial chamber represents a significant investment of labour by Neolithic communities. The unstable mudstone, siltstone and sandstone bedrock beneath the site presented particular challenges for construction, requiring careful placement of the stone elements to ensure stability.
Caer-Dynni Burial Chamber is protected as a scheduled ancient monument under Cadw, the Welsh heritage organisation, with reference number CN081. This designation reflects the site's significance as evidence for understanding Neolithic settlement patterns, construction techniques and burial practices in prehistoric Wales.
Caer-Dynni Burial Chamber is a scheduled monument protected by Cadw under reference CN081. View the official record →
Caer-Dynni Burial Chamber is a prehistoric chambered long cairn built on bedrock comprising Tremadoc Rocks of mudstone, siltstone and sandstone. It is designated a Scheduled Ancient Monument by Cadw under reference CN081.
Caer-Dynni Burial Chamber dates from the prehistoric period, and is classified as a chambered long cairn. It is one of over 32,000 scheduled monuments protected across the UK.
Caer-Dynni 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 CN081.
Several scheduled monuments lie within 10 km, including Castell Cricieth (1.2 km), Criccieth Castle, Outer Bank Defences (1.3 km), Enclosed Hut Circle Settlement North of Coed Gwlyb (3.2 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Caer-Dynni 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.
Caer-Dynni Burial Chamber stands on Tremadoc Rocks (Undifferentiated), bedrock that formed in the Tremadocian. The rock here is mudstone, siltstone and sandstone.