I've explored Wrysgan, Cwmorthin and Rhiwbach many times, done the Croesor - Rhossydd trip, and this week checked out Conglog, Cwt y Bugail and Maen Offeren.
I'm curious to know if anyone out there can recommend any other slate mines in this area? In particular, is it possible to explore underground in any of the sites shown on the map for Foty, Bowydd of Diffwys?
Many thanks.....