Folklore

Mount Caburn
Hillfort

If you make seven circles of Mount Caburn the Devil will jump out at you – according to a local chap this tale was seriously believed c.1914 when he was a boy.

Apparently cited in a letter to? Jacqueline Simpson in 1973, and mentioned in a footnote in
Circling as an Entrance to the Otherworld
Samuel Pyeatt Menefee
Folklore, Vol. 96, No. 1. (1985), pp. 3-20.