The ancient Romans identified Lake Averno as the gateway to the Underworld, in fact, in Dante Alighieri's Divine Comedy, it is also described as the earthly abode of Lucifer, the angel fallen from Paradise. Even the poet Virgil, in the sixth book of the Aeneid, places at this lake the mystical entrance to the Underworld, where the hero Aeneas must go.
In reality it was a cave dug into the tuff, about 200m long, probably created to connect the lake to the sea, which due to the suggestion of the environment and the water infiltrations that create an underground stream, was associated with the infernal Styx. Furthermore legend has it that the waters of the lake exhaled gases that did not allow birds to live, hence the name Avernus, from the Greek Aornon, place without birds.
Lake Averno is a magnificent place, where due to the presence of ancient ruins, nature blends with culture, creating a truly prodigious spectacle.
Near the lake there are also the Temple of Apollo, the Grotta di Cocceio and the Sibyl's cave.