NZ0336 : Waterfall on Bollihope BurnHarehope Quarry is included in County Durham's 'Mineral Valleys Project', and has an on-site Eco-classroom facility. Frosterley Marble was quarried here ,and examples of that fossiliferous limestone can still be seen in the bed of Bollihope Burn. There is also a nature trail, carp ponds and a bird hide. See Durham Town & Country magazine (Autumn 2007) and
http://www.naturalengland.org.uk/regions/northeast/mvp/initiatives/har ehope-quarry.htm