A level is shown on Ordnannce Survey mapping.
A. J. Richards (1991) refers to a quarry named Caerhun as “an 1866 attempt to hive off part of the sett” in his Cwm Eigiau entry, though there is no further detail in his gazeteer.
CRoW land
Publications (2)
- Richards, Alun John (1991); Gazeteer of the Welsh Slate Industry; Gwasg Carreg Gwalch 978-0863811968; p. 95.
- Richards, Alun John, (1999); The Slate Regions of North and Mid Wales and their Railways; Gwasg Carreg Gwalch; 0863815619
