The only island of the Cyclades (with Milos, less spectacular) of volcanic origin, it is unlike any other. Its geology bears witness to one of the most violent eruptions of the last 10,000 years, which many believe to be at the origin of the myth of Atlantis. The resulting tidal wave would have decimated the merchant and war fleets of the Minoan Empire, as well as a good part of the coastal cities of Crete.