Lake Avernus lies in a volcanic region on the south west coast of Italy, between Naples and Cumae. In classical mythology this area or 'Phlegraean Fields' (burning fields) was associated with the infernal regions. Because of its location among dark, gloomy woods and its reputed depth, Avernus was believed to be an entrance to the underworld. It was situated close to the grotto of Deiphobe, the Cumaean Sibyl, a celebrated prophetess, who in Virgil's Aeneid, conducted the Trojan prince, Aeneas, to the underworld to meet the spirit of his dead father.