© Mapbox · © OpenStreetMap contributors · Boundary data © Cadw
Arhosfa'r Garreg-lwyd barrow is a prehistoric round barrow located in Wales and protected as a scheduled monument by Cadw. Dating to the Bronze Age, such burial mounds represent one of the most distinctive monument types of prehistoric Britain and Wales, typically constructed to cover inhumation or cremation burials accompanied by grave goods.
The barrow sits upon bedrock of Lower Devonian age, formed during the Early Devonian period approximately 410 to 390 million years ago. This geology comprises undifferentiated mudstone, siltstone and sandstone, typical of the sedimentary sequences deposited in ancient marine and deltaic environments that characterise much of Wales's geological foundation. The solid geology would have been well-known to the prehistoric communities who selected this location for burial.
The monument is protected under Cadw reference CM337, ensuring its preservation as evidence of Bronze Age burial practice and ritual landscape use in Wales. Round barrows of this period typically stand 1 to 3 metres in height, though their appearance may have been modified by agricultural activity and erosion over the millennia since their construction.
Arhosfa'r Garreg-lwyd barrow is a scheduled monument protected by Cadw under reference CM337. View the official record →
Arhosfa'r Garreg-lwyd barrow is a prehistoric round barrow located in Wales and protected as a scheduled monument by Cadw. It is designated a Scheduled Ancient Monument by Cadw under reference CM337.
Arhosfa'r Garreg-lwyd barrow 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.
Arhosfa'r Garreg-lwyd barrow 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 CM337.
Several scheduled monuments lie within 10 km, including Bwlch y Ddeuwynt Round Cairn (8 km), Banwen Gwys Round Cairns (8.1 km), Blaen y Cylchau Deserted Rural Settlement (8.2 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Arhosfa'r Garreg-lwyd barrow'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.
Arhosfa'r Garreg-lwyd barrow stands on Lower Devonian Rocks (Undifferentiated), bedrock that formed in the Early Devonian. The rock here is mudstone, siltstone and sandstone.