The OS Map shows just north of the Stone Bridge the words “Shaft(dis)”. Little is known locally, and it is possibly an old coal mine.
On the ground there is a deep hollow often filled with reddish/orange coloured water
Just below this is an apparently man made channel leading towards the stream, also filled with the same colour mud. So perhaps it was an Iron deposit that was been mined?
A second candidate for the tittle of “Disused Shaft” is a much smaller hollow nearby which according to local knowledge has a sheet metal capping plate