The Whin Sill again at Low Force

 

Having previously encountered the Whin Sill on the other side of the hill at High Cup Nick I shouldn't have been surprised to find it in Teesdale where its harder rock causes the waterfall at Low Force. However, it did bring home to me the extent of this intrusion. It ends on Lindisfarne; I found it at Dunstanburgh and also on Hadrian's Wall.