I am planning on having a "mooch" into Cwmorthin (Blaenau Ffestiniog) on Saturday for a few hours.
If anyone would like to pop along you are more than welcome
Meet time will be 11:00am at the Llecwedd (Spelling?) Slate Caverns visitor centre car park at Blaenau Ffestiniog or 11:05am at the Cwmorthin car park if you know where it is.
It is essentially a dry mine (a little water at the entrance but not enough to go over normal "boots"). The lower levels are flooded but I don't intend to wander down that far.
Ian