767-774 There, in front, stand the echoing halls of the god of the lower-world, strong Hades, and of awful Persephone. A fearful hound guards the house in front, pitiless, and he has a cruel trick. On those who go in he fawns with his tail and both his ears, but suffers them not to go out back again, but keeps watch and devours whomsoever he catches going out of the gates of strong Hades and awful Persephone.