Bishop Middleham Quarry | DurhamOne of the country's most important disused quarry habitats for wildlifeAbandoned in the 1930s, this former magnesian limestone quarry is a Site of Special Scientific Interest, nationally recognised for the plant life it supports. Unusual species abound on the thin limestone soils, such as blue moor grass, moonwort, autumn https://durhamwt.com/reserves/bishop-middleham-quarry-nature-reserve/