Legend has it that Jason and the Argonauts stopped at the neighbouring island of Anafi, where one of the Argonauts, Euphemus, had a son there with a nymph. To hide the child from divine wrath Euphemus threw a clod of earth into the sea and it grew into an island, which was first named Thera, after his son Theras, and is now known as Santorini.
Evidence exists to think of Santorini as the land of famous ancient Atlantis. The island lost much of its land due to volcanic eruption many centuries ago. Before the event it hosted a colony of prehistoric Minoan Civilization, whose inventions became the base of Greek culture in the Antique period.
One of Bellerophontes’ quests was a challenge assigned by king Proito to slay the Chimera, which lived in the caldera of Santorini.
The eruption of Santorini is believed to have a direct connection with Zeus’s storm to punish the whole humanity. It is said that the only survivors of the storm were Deucalion, son of Prometheus and his wife, Pirrha.
Another version of the reason for Santorini's shape concerns a major flood that was caused by Poseidon’s anger with Athena in a battle as to who would govern Athens.