I had a little surface wonder around Rhyd, near Porthmadog yesterday, renewing acquaintance with some mines of old, as well as visiting a couple of new, obscure ones.Ty'n y Ddol SH 6374 4259This was a low collapsed adit at the base of a low cliff near a small river. Peeping inside showed it to be suprisingly long. I expected it to shut down after a few meters, but it appears to go at least 50m (it appears to curve to right so it may continue). Estimated 3' of water in the adit with 2' of airspace. There's no sign of spoil or mineralisation. It's in the Cwm Eigiau formation, so I wondered if it was a slate trial, however Coflein has it down as being a metal mine, and in fact, Wilkinson (Mines and Quarries of North Wales) has it down as being lead. No other details on the Coflein website. Bryntirion SH 6366 4224Two adits where the ground rises to the south of the Afon Rhyd. The upper adit was blind after 3'. The lower adit is blocked by a large slab, however a gap above the slab shows a flooded adit, although it's difficult to judge extent. Again, virtually no spoil, but the were some traces of iron staining. Copper according to Wilkinson.Thence a walk via Hafod Boeth and Catherine and Jane to look at the Bwlch y Plwm opencast. There are accesible underground workings under the opencast, but it's 20 years since I explored these. These workings are (as far as I'm aware) not connected to the 'normal' Bwlch-y-plwm mine as used by outdoor groups.My return trip took me down towards the farm, a route I've not done before, so there were a couple of interesting things I found. There's a blocked adit emitting water at the base of the large spoil heap in front of the opencast. I've got a feeling I may have got down to this level 20 years ago.Further down, just behind the farmhouse is another blocked adit emitting enough water to form a pool. Presumably this must be linked to the opencast workings?Finally there was a large bore square sectioned flooded 'shaft' a bit lower down the footpath, depth undertain.
Is that a body of water I can see there , is it a puddle or does it go ?
It's not too far from the road for a quick plumb.
Bwlch-y-plwm is this the place near Dolgellau with lots of flooded little sumps where you drive through a farmyard ?
I had a little surface wonder around Rhyd, near Porthmadog yesterday...
Paul, take the road to Beddgelert from Penrhyndeudraeth, road bends to the right up hill, over the Ffestiniog railway crossing and a minor road on the right takes you to where you can park and carry on along a track to Catherine and Jane. Back on the main road and down hill again, another minor road on the right will take you past the Pantywrach upper adit on the right that I dug open years ago, deep adit on the left amongst the brush, and eventually to Bwlch y Plym. Deep adit and remains of dressing floors below the road, upper works on the right above the road.Now do you know where you are?
Quote from: RobinGriffiths on May 17, 2021, 07:53:47 pmIt's not too far from the road for a quick plumb.It's a well known area for a bit of late night 'plumbing'.
Quote from: Paul Marvin on June 16, 2021, 04:16:48 pm Bwlch-y-plwm is this the place near Dolgellau with lots of flooded little sumps where you drive through a farmyard ?No.Quote from: RobinGriffiths on May 15, 2021, 02:06:51 pmI had a little surface wonder around Rhyd, near Porthmadog yesterday...Chris.
Ha Ha very informative answer there Chris nothing like keeping it short
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