Clwyd Metal Mines Survey
lies in the community of Abergele in the county of Conwy. It is located at Ordnance Survey national grid reference SH93527696.
The mine is recorded in the CPAT Historic Environment Record as number 18070 and this number should be quoted in all correspondence.
Lead/Copper (Roman/Medieval-19th century)
An east-west vein with north-south strings in Carboniferous Limestone.
Ffos-y-Bleiddiaid is a natural limestone fissure that crosses the north and coastal side of the hillfort of Castell Cawr. Locally known either as the Fosse of Wolves or the Roman Fosse (Ffos-y-Rhufeiniaid) since it has been claimed that Roman hammers and
tools together with the hilt of a Roman sword had been found in the vicinity. The evidence of Roman workings, dating from 19th-century writings remains unsubstantiated.
Working evidence was located in the form of three levels in tiers cutting into the north side of an open-cut slightly off from the main east-west cut. Further west along the main cut, a deep hole veers down, far too steep to investigate thoroughly. The
gorge at this point is traversed by a wooden bridge, part of the recent path improvement through the Tan-y-goppa Woods. Access to the entire length of the gorge is restricted by the dense undergrowth and safety fencing, but the whole length is likely to
have been worked as open-cuts at a very early period.
A single shaft mound remains in a field to the south of Castell Cawr at SJ93807645.
A shaft showing on the 1st edition OS map to the south-west of this is no longer visible and the shaft to the north-east on the same vein as the Ffos-y-Bleiddiaid cut, lies under a modern housing estate.
The Ffos-y-Bleiddiad cut appears to have been already exhausted of ore by the 19th century.
This HTML page is reproduced from the Powys and Clwyd Metal Mine Surveys which were undertaken between May 1992 and December 1993 by Mark Walters and Pat Frost of the Clwyd Powys Archaeological Trust with financial support from Powys County Council, Clwyd County Council and Cadw: Welsh Historic Monuments. Further information about this site is available in CPAT's Regional Historic Environment Record.
Page produced by Rachel Stebbings and Chris Martin.
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