Folklore

Boleigh Fogou
Fogou

The tale of ‘Duffy and the Devil’ tells of how the squire, out hunting hares one night, chased one from the nearby Merry maidens, past the Pipers and down into the fogou. Once inside the fogou he witnessed a ceremony of witches, disturbing them as they met with the Devil. He reportedly had to run for his life.

From William Bottrell’s ‘Traditions and Hearthside Stories of West Cornwall’ (1873)
sacred-texts.com/neu/celt/swc2/index.htm