Respicit Aeneas subito et sub rupe sinistra moenia lata videt, triplici circumdata muro, quae rapidus flammis ambit torrentibus amnis, Tartareus Phlegethon, torquetque sonantia saxa.
Suddenly Aeneas looks back, and under a cliff on the left sees a broad castle, girt with triple wall and encircled with a rushing flood of torrent flames'Tartarean Phlegethon, that rolls along thundering rocks.