Used by outdoor activity group trips. Straight tunnel leading to blocked incline and chambering. The blockage can be bypassed. Level 1, below, is flooded but access to dive it is from here. There was an agreement for suitably insured public use but NRW terminated this in 2022
Drainage tunnel for Rhiwbach underground workings
Gated.
External Links
Publications (2)
- Jones, Griff R. (2005). Rhiwbach Slate Quarry: Its History and Development. G.R.Jones. ISBN: 9780953369225
- Richards, Alun John (1991); Gazeteer of the Welsh Slate Industry, A; Gwasg Carreg Gwalch 978-0863811968
