Cauldron Snout

Cauldron Snout is a cascade on the upper reaches of the River Tees in Northern England, immediately below the dam of the Cow Green Reservoir. It is well upstream of the High Force waterfall, and is on the boundary between County Durham and Cumbria, England. The waterfall lies within the North Pennines Area of Outstanding Natural Beauty and European Geopark.

It is more a long cataract than a waterfall, and at 200 yards long, reckoned to be the longest waterfall in England.

Source: Wikipedia