Monsal Dale, Peak District.

Monsal Dale is a valley in Derbyshire, England, in the White Peak limestone area of the Peak District National Park. It is a Site of Special Scientific Interest (SSSI) and part of a Europe-wide network called Natura 2000. The Headstone Viaduct was built by the Midland Railway over the River Wye. The bridge, which stands near the 533-yard (487 m) Headstone Tunnel, is 300 feet (91 m) long. Now forming part of the Monsal Trail.