Small run in adit with very little spoil.
Richards (1991) lists an alternative name as Nant Y Pistll Gwyn but this makes no sense as that stream is 1km away.
Possible trial.
CRoW land.
Publications (2)
- Richards, Alun John (1991); Gazeteer of the Welsh Slate Industry, A; Gwasg Carreg Gwalch 978-0863811968
- Richards, Alun John, (1999); The Slate Regions of North and Mid Wales and their Railways; Gwasg Carreg Gwalch; 0863815893
