Tarn is a regional term used largely, but not exclusively in the Lake District, which along with many other local names, originated with the Viking invaders who settled in Cumbria in the tenth century.
The tarns in Cumbria were formed as a result of glacial action, when the glaciers and ice sheets finally receded some 10,000 years ago, scouring the landscape, allowing water to be trapped and contained. Many of the highest and most spectacular tarns occupy corries (from Scottish Gaelic coire meaning a pot or cauldron) scooped from the fells by ice, some are surprisingly deep.
|Bleaberry tarn and
Buttermere looking down from Red pike.|
|Red tarn and striding edge looking down from Swirral edge.|
Remote Blea Water is one of two corrie tarns that lie beneath the eastern crags of High Street, the other being Small Water. Circular in shape, Blea Water bears the distinction of being the deepest tarn in the Lake District. In 1948 its depth was ascertained to be 63 metres, which is exceeded only by Windermere and Wastwater in the Lake District. The tarn occupies a dramatic setting, edged on three of its sides by an amphitheatre of towering cliffs and slopes of Riggindale Crag, Pilot Crag and High Street.