The first-century BC Latin poet Virgil, in his epic Aeneid, has the Cyclopes: "Brontes and Steropes and bare-limbed Pyracmon" toil under the direction of Vulcan (Hephaestus), in caves underneath Mount Etna and the Aeolian islands. Virgil describes the Cyclopes, in Vulcans smithy forging iron, making a thunderbolt, a chariot for Mars, and Pallass Aegis, with Vulcan interrupting their work to command the Cyclopes to fashion arms for Aeneas. The later Latin poet Ovid also has the Hesiodic Cyclopes Brontes and Steropes (along with a third Cyclops named Acmonides), work at forges in Sicilian caves.According to a Hellenistic astral myth, the Cyclopes were the builders of the first altar. The myth was a catasterism, which explained how the constellation the Altar (Ara) came to be in the heavens. According to the myth, the Cyclopes built an altar upon which Zeus and the other gods swore alliance before their war with the Titans. After their victory, "the gods placed the altar in the sky in commemoration", and thus began the practice, according to the myth, of men swearing oaths upon altars "as a guarantee of their good faith".According to the second-century geographer Pausanias, there was a sanctuary called the "altar of the Cyclopes" on the Isthmus of Corinth at a place sacred to Poseidon, where sacrifices were offered to the Cyclopes. There is no evidence for any other cult associated with the Cyclopes.
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