Explorer Active OL 31 North Pennines, Teesdale, Weardale

Map sheet number OL31 in the OS Explorer series covers an area of the North Pennines AONB, Barnard Castle, Alton, and Allenheads. Highlights of the area include: Hamsterley Forest, Middleton Common, Milburn Forest, Cow Green and Burnhope Reservoirs, River Tees, Teesdale, River Wear, Weardale and a section of the Pennine Way.