re a rough survey conducted by the donor of unrecorded mine workings on the east side of the Conway Valley (opposite Aberllyn) at Ffrith Rhedyn.
[Not marked on O.S. maps]
re a rough survey conducted by the donor of unrecorded mine workings on the east side of the Conway Valley (opposite Aberllyn) at Ffrith Rhedyn.
[Not marked on O.S. maps]