England, County Durham, North Pennines National Landscape. View across Teesdale from Whistle Crag, near Middleton-in-Teesdale.

England, County Durham, North Pennines National Landscape. View across Teesdale from Whistle Crag, near Middleton-in-Teesdale.

England, County Durham, Cow Green Reservoir. Aerial photo of Cow Green Reservoir, built to supply water to the industries of Teesside.

England, County Durham, Barnard Castle. A spring snowfall creates blizzard like conditions on farm land near Barnard Castle.

England, County Durham, Barnard Castle. A spring snowfall creates blizzard like conditions on farm land near Barnard Castle.

England, County Durham, Tees Dale. Farm building in a sheep field near to Bowlees.

England, County Durham, Tees Dale. Farm building in a sheep field near to Bowlees.

England, County Durham, Low Force. The River Tees cascades down the Low Force waterfall in County Durham.

England, County Durham, Low Force. The River Tees cascades down the Low Force waterfall in County Durham.

England, County Durham, Low Force. The River Tees cascades down the Low Force waterfall in County Durham.

England, County Durham, Stockton-on-Tees. The Infinity Bridge, a public pedestrian and cycle footbridge across the River Tees.

England, Middlesbrough, Middlesbrough Transporter Bridge. The Tees Transporter Bridge (Middlesbrough Transporter Bridge) which carries a travelling 'car', or 'gondola', suspended from the bridge, across the river Tees in 90 seconds.

England, Middlesbrough, Teesmouth NNR. Sand dunes at the Teesmouth National Nature Reserve near Seaton Carew with the Teeside Redcar Steel Works near Middlesbrough in the distance.

England, County Durham, Seaton Carew. The Teeside Redcar Steel Works viewd from Seaton Carew.

England, County Durham, Teesside Offshore Windfarm. The north sea situated wind turbines of the Teesside Offshore Windfarm viewd from Seaton Carew.

England, County Durham, High Force. The River Tees cascades down the High Force waterfall in County Durham.

England, County Durham, High Force. The River Tees cascades down the High Force waterfall in County Durham.

England, County Durham, Middleton In Teesdale. A wild flower meadow and a stone built farm building in County Durham.

England, County Durham, High Force. The River Tees cascades down the High Force waterfall in County Durham.

England, County Durham, High Force. The River Tees cascades down the High Force waterfall in County Durham.

England, County Durham, High Force. The River Tees cascades down the High Force waterfall in County Durham.

England, County Durham, High Force. The River Tees cascades down the High Force waterfall in County Durham.

England, County Durham, High Force. The River Tees cascades down the High Force waterfall in County Durham.

England, County Durham, River Tees. The River Tees and the north Pennines, downstream of the High Force falls in County Durham.

England, County Durham, River Tees. The River Tees and the north Pennines, downstream of the High Force falls in County Durham.

England, County Durham, River Tees. The River Tees and the north Pennines, downstream of the High Force falls in County Durham.

England, County Durham, River Tees. The River Tees and the north Pennines, downstream of the High Force falls in County Durham.