Bowscale Tarn is 56 feet deep and during the Victorian era was popular with tourists. According to folklore two immortal fish live in this corrie tarn and depending upon which version of the story you read, they may, or may not have the ability to talk.
William Wordsworth mentions these fish in his 1888 ‘Song, at the Feast of Brougham Castle‘.
And both the undying Fish that swim
Through Bowscale-Tarn did wait on him,
The pair were Servants of his eye
In their immortality,
They moved about in open sight,
To and fro, for his delight.