Zeus been hidden by Gaia. Together, Zeus, his brothers and sisters, Hecatonchires and Cyclopes overthrew Cronus and the other Titans, in the combat called the Titanomachy. The defeated Titans were then cast into a shadowy underworld region known as Tartarus. Atlas, one of the titans who fought against Zeus, was punished by having to hold up the sky. After the battle with the Titans, Zeus shared the world with his elder brothers, Poseidon and Hades, by drawing lots: Zeus got the sky and air, Poseidon the waters, and Hades the world of the dead (the underworld). The ancient Earth, Gaia, could
Europa (consort of Zeus) chthonic cult and oracle were dedicated: "the grove of Trophonios by the river Herkyna ... there is also a sanctuary of Demeter Europa ... the nurse of Trophonios." The mythographers tell that Zeus was enamored of Europa and decided to seduce or ravish her, the two being near-equivalent in Greek myth. He transformed himself into a tame white bull and mixed in with her father's herds. While Europa and her helpers were gathering flowers, she saw the bull, caressed his flanks, and eventually got onto his back. Zeus took that opportunity and ran to the sea and swam, with her