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Plas Newydd Burial Chambers is a prehistoric chambered tomb situated in Wales, built upon bedrock comprising Dinantian limestone with subordinate sandstone and argillaceous rocks. These geological formations, laid down during the Mississippian period, provided the stone necessary for the monument's construction. The underlying geology has shaped the landscape in which this Neolithic or Early Bronze Age structure was erected, contributing to the monument's survival and archaeological significance.
As a chambered tomb, the structure would have served as a communal burial place for a local population, reflecting the social and religious practices of prehistoric Wales. The chamber's orientation and construction method are typical of megalithic monuments built during this period across Britain and Ireland, with stones arranged to create internal burial chambers beneath an earthen mound or cairn.
The monument is now protected as a scheduled ancient monument under Cadw, the Welsh Historic Monuments service, with the reference AN005. This designation ensures the preservation and management of this important prehistoric site, maintaining it as a resource for archaeological study and public understanding of Wales's early inhabitants and their monumental architecture.
Plas Newydd Burial Chambers is a scheduled monument protected by Cadw under reference AN005. View the official record →
Plas Newydd Burial Chambers is a prehistoric chambered tomb situated in Wales, built upon bedrock comprising Dinantian limestone with subordinate sandstone and argillaceous rocks. It is designated a Scheduled Ancient Monument by Cadw under reference AN005.
Plas Newydd Burial Chambers 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.
Plas Newydd Burial Chambers 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 AN005.
Several scheduled monuments lie within 10 km, including Bryn-Glas Roman Signal Station (6.5 km), Caer Carreg y Fran (7.5 km), Llys Dinorwig (7.8 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Plas Newydd Burial Chambers'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.
Plas Newydd Burial Chambers stands on Dinantian Rocks (Undifferentiated), bedrock that formed in the Mississippian. The rock here is limestone with subordinate sandstone and argillaceous rocks.