Legend has it that Addlebrough was once the home of a giant who had a feirce row with the devil. Perched on the top of the crag, the rough ridge to the west, the giant hurled boulders down at the devil, but they fell short and landed at the side of Semerwater. The devil’s response landed high on the flank of Addlebrough.
The giant granite boulders thrown by the giant can be seen on the edge of Semerwater and are known as The Carlow and Mermaid stones.
