© Mapbox · © OpenStreetMap contributors · Boundary data © Cadw
Beddau'r Derwyddon is a post-medieval or modern pillow mound located in Wales and protected by Cadw under reference CM154. Pillow mounds are artificial earthworks constructed to provide warrens for rabbits, which were valued as a source of meat and fur from the medieval period onwards. The mound at this site sits upon Dinantian rocks of limestone, sandstone and argillaceous composition, typical of the Mississippian bedrock found across much of South Wales. The underlying geology would have influenced the construction and drainage of the warren, with the naturally permeable limestone potentially assisting water management around the mound. The survival of the earthwork demonstrates the historical importance of rabbit husbandry in the Welsh landscape. Though post-medieval in date, the monument reflects centuries-old traditions of controlled animal farming that shaped rural land use and economy.
Beddau'r Derwyddon is a scheduled monument protected by Cadw under reference CM154. View the official record →
Beddau'r Derwyddon is a post-medieval or modern pillow mound located in Wales and protected by Cadw under reference CM154.
Beddau'r Derwyddon dates from the post medieval/modern period, and is classified as a pillow mound. It is one of over 32,000 scheduled monuments protected across the UK.
Beddau'r Derwyddon 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 CM154.
Several scheduled monuments lie within 10 km, including Tair Carn Isaf Cairns (1.6 km), Banc Crucorford round cairn (2.2 km), Group of Burnt Mounds 300m SSW of Cilcoll Farm (5.4 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Beddau'r Derwyddon'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.
Beddau'r Derwyddon stands on Dinantian Rocks (Undifferentiated), bedrock that formed in the Mississippian. The rock here is limestone with subordinate sandstone and argillaceous rocks.