Loughrigg Tarn is a small, secluded and picturesque natural lake, rarely being visible from the fells. It is situated north of Windermere, just north of Skelwith Bridge village at the foot of Loughrigg Fell. The Tarn was a favoured place of William Wordsworth, who, in his Epistle to Sir George Howland Beaumont Bart, likened it to “Diana’s Looking-glass...round, clear and bright as heaven", in reference to Lake Nemi, the mirror of Diana in Rome.