Styhead Tarn is a tarn

Tarn (lake)

A tarn is a mountain lake or pool, formed in a cirque excavated by a glacier. A moraine may form a natural dam below a tarn. A corrie may be called a cirque.The word is derived from the Old Norse word tjörn meaning pond...

 in the English Lake District

Lake District

The Lake District, also commonly known as The Lakes or Lakeland, is a mountainous region in North West England. A popular holiday destination, it is famous not only for its lakes and its mountains but also for its associations with the early 19th century poetry and writings of William Wordsworth...

, near the top of the Sty Head pass, at the head of Borrowdale

Borrowdale

Borrowdale is a valley and civil parish in the English Lake District in the Borough of Allerdale in Cumbria, England.Borrowdale lies within the historic county boundaries of Cumberland, and is sometimes referred to as Cumberland Borrowdale in order to distinguish it from another Borrowdale in the...

. It is on the route from Wasdale

Wasdale

Wasdale is a valley and civil parish in the western part of the Lake District National Park in Cumbria, England. The River Irt flows through the valley to its estuary at Ravenglass. A large part of the main valley floor is occupied by Wastwater, the deepest lake in England...

 to Borrowdale, and is therefore a well visited point in the Lake District. It is also passed by walkers ascending Scafell Pike

Scafell Pike

Scafell Pike is the highest mountain in England at . It is located in Lake District National Park sometimes confused with the neighbouring Sca Fell, to which it is connected by the col of Mickledore...

from Borrowdale via the Corridor Route. It is permissible to fish the tarn which contains wild brown trout.