It is one of the largest lakes in the Lake District. It is long and narrow, being c. 4 miles long and 0.75 miles wide, it is also very shallow with a depth of 70 feet at its deepest point.
The A66 runs roughly north/south along the western edge of the lake. With spectacular views, the laybys are popular spots for photographers and bird watchers alike with the latter looking for osprey. The section running south towards Keswick was built on top of a former railway track leading to Penrith.
The Lake is said to be home to the Eachy (as is Windermere) but there is photographic evidence available for this claim! In summer of 1973, Rudolf Staveness and Gunnar Jacobson went on a roundtrip of Scotland, Wales and England and whilst stopping at Bassenthwaite Lake they photographed a creature in the water. For the full story follow the link : Eachy at Bassenthwaite