One of the Cyclades in the Aegean, famous as a major source of obsidian, whose trade brought wealth to the island. It was used extensively for chipped stone implements in Aegean prehistory from as early as the 10th millennium BC. The island, however, was not inhabited until the 4th millennium BC. At Phylakopi three successive settlements were discovered, of roughly Early Cycladic II, Middle Cycladic, and Late Cycladic respectively. They show increasing influence from the Minoans of Crete, so much so that the third is better regarded as a provincial Minoan town than a native Cycladic one. Nevertheless the island maintained close contact with the Greek mainland, and with the collapse of Crete is came fully into the sphere of the Mycenaeans. The classical polis, destroyed by Athens in 416 BC, centered on the fortified acropolis of ancient Melos.