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Bryn Eryr Rectangular Earthwork is a Roman enclosure located in Anglesey, Wales, dating to the Roman period of occupation in Britain. The monument comprises a rectangular defensive work constructed with earthen banks, characteristic of Roman military installations or administrative sites established during the campaigns and subsequent occupation of Wales. Its precise function within the Roman settlement pattern of Anglesey remains a subject of archaeological study, though such rectangular enclosures typically served as fortified positions for military garrisons or civil administrative centres. The site is protected as a Scheduled Ancient Monument under Cadw, the Welsh heritage protection authority.
Bryn Eryr Rectangular Earthwork is a scheduled monument protected by Cadw under reference AN100. View the official record →
Bryn Eryr Rectangular Earthwork is a Roman enclosure located in Anglesey, Wales, dating to the Roman period of occupation in Britain. It is designated a Scheduled Ancient Monument by Cadw under reference AN100.
Bryn Eryr Rectangular Earthwork dates from the roman period, and is classified as a enclosure. It is one of over 32,000 scheduled monuments protected across the UK.
Bryn Eryr Rectangular Earthwork 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 AN100.
Several scheduled monuments lie within 10 km, including Fodol Ganol Enclosed Hut Group (7.2 km), Coed Nant-y-garth, standing stone to N of (7.4 km), Dinas Camp (8.8 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Bryn Eryr Rectangular Earthwork'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.
Bryn Eryr Rectangular Earthwork stands on Unnamed Metamorphic Rocks, Neoproterozoic, bedrock that formed in the Neoproterozoic. The rock here is marble, meta-limestone.