It is situated north of Windermere, just north of the village of Skelwith Bridge, and at the foot of Loughrigg Fell.
"Loughrigg Tarn" is a bit of a tautology, since "loughrigg" means "ridge of the lough (lake)" and "tarn" is also the name of a body of water.
Loughrigg 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.
[1] Alfred Wainwright notes that Loughrigg Tarn is "one of the most secluded of tarns", rarely being visible from the fells.
This Cumbria location article is a stub.