|Petra (and a sheep) head back towards Llan Ffestiniog.|
We'd seen some signs of a tramway on Google earth, across the moor from Croes y Dwy Afon on the Migneint at SH751438. This part of the moor coruscates with old mining remains; it's as if all the local people did in the 19th century was dig little trials up here- although it hasn't had any beneficial effect on the drainage.
We left the car at the Llyn Ddu car park at the foot of Carreg y Foel Gron and trudged up the road in the worsening drizzle. Petra was suffering from a sore leg from walking for miles on the Migneint the day before but it didn't seem to slow her down. At least she had the decency not to look back when I almost did one of my famous pratfalls into the bog; it wasn't an edifying sight or sound as I saved myself by planting my arms deep into sphagnum.
|Struggling to keep upright in the boggy ground. Some slate slabs over the leat.|
|The eponymous Pistyll and waliau|
|Waliau from the north, with Croes y Dwy Afon quarry and the Penmachno road behind.|
|The remains of a quarry pit.|
|The tramway/tip run.|
As far as we can glean from what is out there, this operation was a slate mine, operated from three different semi-adjacent sites- a quarry, a pit and a shaft/adit. It's old, probably mid 1800's and relatively primitive, although Alun John Richard's Slate Gazetteer mentions some “holding down bolts” near the pit for a pump, which might mean that it was operating into the C20th.
So, a pleasant couple of hours, a bit of exercise and a fine view of the nearby Gamallt hills, with an old slate quarry thrown in. And a lot of run-in trials, depressions and mysterious slate tips. Did I mention bog, too? That's the Migneint!
|Towards the Gamallt. Farm road made entirely from slate waste from the pit.|