Drove past this on the minor road between Tal-y-bont (which is on the A487 between Machynlleth and Aberystwyth) and the Nant y Moch reservoir, in the general Plynlimon area.

Brief Internet search failed to provide a definite answer, does anyone recognise it?

There were many other ex-mining sites dotted along the road, might be worth a day's mooching!

Phil

Looks to me to be Blaen Ceulen Mixed Mine
www.aditnow.co.uk/Mines/Blaen-Ceulen-Mixed-Mine_10978/

Erm yes Les that does indeed look very similar indeed

apologies for the triplicate other posts on the same subject, I have tried to delete them but am unable to..... Tim?