HWH - Cawfields Quarry

Frozen lake in Cawfields Quarry. (Haltwhistle is just over 2 1/4 miles to the south).

Hadrian's Wall was here, until this section was destroyed by quarrying away the ridge - the hard dolerite [whinstone] intrusion outcrops known locally as the Great Whin Sill. Much of the eastern half Hadrian's Wall was built on top of the sill.

en.wikipedia.org/wiki/Whin_Sill