Note 7 — Chapter III · Ancient Mariners and Explorers
Reading edition
The Mediterranean must have been crossed at a very early period. Settlements of seafarers took place in Crete before 3000 B.C.7 On the island have been found flakes of obsidian that were imported at the dawn of its history from the Island of Melos. No doubt obsidian artifacts were used in connection with the construction of vessels before copper implements became common.