Sorry for delay in responding Stig (and everybody else on the trip).
We'll aim to meet up at 10am at the car park just above Tanygrisiau, see a Google map here:
http://maps.google.co.uk/maps?f=q&source=s_q&hl=en&geocode=&q=Tanygrisiau&sll=53.800651,-4.064941&sspn=18.514185,41.791992&ie=UTF8&ll=52.9899,-3.963404&spn=0.004592,0.010203&t=h&z=17 Tanygrisiau is on that map, zoom out a bit and you'll see the pushpin, it is about a mile and a half from Blaenau Ffestiniog along the A496.
Drive into Tanygrisiau, then up the hill passing under the Ffestiniog railway, keep going up hill passing some more houses, then bear right and continue up to the obvious car park by the slate tips (visible on that Google map).
It is about a 15 to 20 minute walk up to the mine from the car park.
If it's anybody's first time underground here is a quick run down of the equipment you'll need:
- Helmet with lamp (reply here if you need to borrow one)
- Spare torch
- Camera if you want to take photos (tripod if you have one)
- Wellies
- Boiler suit / overalls if you have them, don't worry too much if not, just wear something reasonably warm (it isn't particularly cold underground so layers are best) that you don't mind getting mucky
- Gloves, cheap gardening style gloves are ideal (slate is sharp)
- Food and drink
I think the group is a mix of a few people who have not been underground before and some more experienced who have either not seen much of Cwmorthin or have never visited. So we'll work out an itinerary on the day once we've worked out what suits everybody best.
Will be either myself or merddinemrys or both of us showing you around.
my orders are to sit here and watch the world go by