Moss Eccles Tarn is an attractive manmade lake on the fell above Near Sawrey. Beatrix Potter kept a boat here when she and her husband lived in Far Sawrey. She often sat and sketched the tarn, using it as a basis for her Jeremy Fisher stories. In 1926 she bought part of the tarn and left it to the National Trust upon her death.

Easily accessed by a footpath from Near Sawrey, the tarn is shaped rather like a comma with a mixture of grassy and wooded banks.