This pool on the Cornish moor, said to be bottomless, is haunted by the spirit of Tregeagle, a man of position and wealth. Having sold himself to the Devil in exchange for a life of unbridled excesses and crime, "he marked each day with some damned deed." Now he pays for his bargain, by day in the agonies of impossible tasks, and by night, with dreadful howls and roars, fleeing through the night-storms before his Master's hell-hound pack.