The Pelasgians, of Peleg, five generations from Shem (a son of Noah), were famed ancient navigators and megalithic builders in the eastern Mediterranean, whose ocean shoreline cities in Greece are now on the shallow seafloor, confirmed by the sightings of submerged ruins at many locations, such as off Platygiali, Elafonisos, Astakos, Samothrace, and Abdera, and corroborated by Plato’s account in Critias and Timaeus that much of Greece was consumed by the sea when Atlantis went under too, in the times of Cecrops and Erectheus, Erysichthon, and Erichthonius, as noted by Plato, but these kings actually ruled after almost 200 years of anarchy when the Ice Age ended, when the world ocean to rose a few hundred feet during about a century.
Plato also noted that the climate in Greece changed at that time; a drastic decline of rainfall, for the limestone hills to lose the vast forests and pastures of the Ice Age because the many streams dried up when the Ice Age ended, actually circa 1500 B.C., confirmed by the “bronze age” ruins now found on the seafloor, and by that the legendary Flood of Ogygos occurred at this time, Ogygos having been an archaic king of Attica, the peninsula of southeastern Greece where Athens was a dominant city from the earliest days, the Acropolis having originally been the city with temples on the high place, the Acropolis.
Cyclopean was the termed used by the classical Greeks to describe the enormity of the stone blocks which were used in the megalithic buildings of the Pelasgians, who were the Mycenaeans (the term Mycenaean derived for the ancient pelasgian city Mycenae). The classical Greeks marveled at the size of the hewed stone blocks used, noting that (according to legend) they were cut and placed by giants, cyclops (which means round eyes), who were the Pelasgians, as the ancient Greeks recorded the Pelasgians being their forebearers.
To see how the ancients, during the Ice Age, measured and mapped the earth, read on under category Ancient Navigation, where you can learn how even the greek olympic foot length was derived by the wobble rate of the earth’s axis, according to the rate of precession, which is 72 years/degree. See http://genesisveracityfoundation.com.