Number 9 adit to the twylls - enter by the adit - in to the turntable, take the right fork and turn left up the scree, near to the top is a short tunnel on the right, through this to a rubble slope and a low roof, up the rubble and you will find the boot. you are now in the twylls, and the rest of rhosydd is open to you - including through to the 'chamber of death'.

The left turn at the turntable leads to a dead end and a sump, although there is a draft i have never explored it. There is a lake waiting for a crossing - dinghy hunting...

Number 9 adit to the twylls - enter by the adit - in to the turntable, take the right fork and turn left up the scree, near to the top is a short tunnel on the right, through this to a rubble slope and a low roof, up the rubble and you will find the boot. you are now in the twylls, and the rest of rhosydd is open to you - including through to the 'chamber of death'.

The left turn at the turntable leads to a dead end and a sump, although there is a draft i have never explored it. There is a lake waiting for a crossing - dinghy hunting...

I'm pretty sure that's the lake in question - iirc Mr.Simply Emploring has been across, but it leads nowhere in particular.

I noticed there are a few chambers coming off the no9 adit before it reaches the main workings, one of which comes in close contact to the eastern workings. Anyone taken a look here?

Linden

Yep - that's why original plans of slate mines used different colours for different floors. Where the plans are monochrome, then different styles of chain-dotting are used to indicate different floors. The plan in "Rhosydd Slate Quarry" which is only in outline and small scale was printed in two colours, the adits being printed in red to make the distinction clear. Thus on the original it is clear that the "Back Vein" chambers A west and A and B East are on floor 9, while they overlie chambers A B and C east on floor 13 - at a great depth below.

It's one of the problems of publishing - especially of large mines!

Graham

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The map is the territory - especially in chain scale.

Also this one on Amazon
http://www.amazon.co.uk/gp/offer-listing/0952297906/ref=sr_1_olp_1/026-3085709-6901207?ie=UTF8&s=books&qid=1194427775&sr=1-1 
Graham

Did they have it Vanoord? They have kept it on there list for ages but not always had a copy!
Anyway, if you lot were up at 2am a few weeks ago you would have got a brand new copy! hee hee!!

The problem with digging is that you will be trying to move huge lumps of rock, from the bottom, with more on top of them.
I think the collapse has filled up about 3 floors, so there is more chance of crawling and squeeeeeezing, the bigger the rocks, the easier it will be!

We could always get a tunnelling machine and start boring a tunnel! Apparently a machine from one of the attempts at a Channel Tunnel was exposed a couple of years back due to coastal erosion - we could restore it!

Any takers?