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Mynydd Enlli Round Barrow is a prehistoric round barrow on Bardsey Island off the coast of North Wales. The monument sits upon Upper Cambrian bedrock of Tremadoc formation, metasedimentary rock laid down during the Tremadocian period over 500 million years ago. This ancient geology provided the raw material for the barrow's construction and forms the foundation of the island's distinctive landscape.
The barrow belongs to a widespread tradition of burial monuments erected during the Bronze Age across Britain and Wales. These earthworks typically mark the graves of notable individuals or families and served as enduring focal points within the prehistoric landscape. The monument's position on Bardsey Island, significant in later periods as a centre of Christian pilgrimage, shows how older sacred sites often retained cultural importance across different eras.
The site is protected by Cadw, the Welsh heritage organisation, under reference CN140, ensuring its preservation as part of Wales's archaeological heritage. Round barrows of this type remain crucial sources of evidence for understanding prehistoric social structures, burial practices and settlement patterns. Mynydd Enlli's survival on the island contributes to our knowledge of Bronze Age communities and their use of coastal and island locations.
Mynydd Enlli Round Barrow, Bardsey Island is a scheduled monument protected by Cadw under reference CN140. View the official record →
Mynydd Enlli Round Barrow is a prehistoric round barrow on Bardsey Island off the coast of North Wales. It is designated a Scheduled Ancient Monument by Cadw under reference CN140.
Mynydd Enlli Round Barrow, Bardsey Island dates from the prehistoric period, and is classified as a round barrow. It is one of over 32,000 scheduled monuments protected across the UK.
Mynydd Enlli Round Barrow, Bardsey Island 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 CN140.
Several scheduled monuments lie within 10 km, including Huts on Mynydd Enlli, Bardsey Island (0.2 km), Cross-Inscribed Stone in the Chapel, Bardsey Island (0.4 km), Inscribed Stone in the Chapel, Bardsey Island (0.4 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Mynydd Enlli Round Barrow, Bardsey Island'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.
Mynydd Enlli Round Barrow, Bardsey Island stands on Upper Cambrian, Including Tremadoc, bedrock that formed in the Tremadocian. The rock here is metasedimentary rock.