In Critias and Timaeus, Plato wrote that there was a catastrophic sea level rise which consumed much of Greece, when the Athenians were at war with the Atlanteans, whose empire, according to Plato, extended both inside and outside the Pillars of Hercules (known today as Gibraltar), extending into the Mediterranean as far as Italy and Libya, so it’s obvious that was a global sea level rise, having raised the sea level of the Mediterranean and the Atlantic, and therefore, as well, all of the world ocean, obviously. That was the sea level rise with the end of the Ice Age, when the extensive and deep icepacks on the continents melted rapidly into the sea, leaving only the glaciers in the high mountains as reminders.
And because the egyptian priests, who told the Greeks the story circa 600 B.C., interestingly failed to mention their submerged cities of Herakleion and Menouthis, now resting on the seafloor, five miles from shoreline near Alexandria, saying that Egypt was not affected by the sea level rise which inundated much of Atlantis and Greece, they were obviously disingenous or ignorant reporters, calling further into question their date for the sea level rise to have been circa 9600 B.C., additional to the fact that those were bronze age warriors and fleets described by Plato, not cavemen with rocks and sticks.
If the 9,000 “years” which Plato recited before Solon’s time (600 B.C.) that Atlantis and much of Greece went under were really 9,000 lunar cycles, then it’s undertandable that we see hundreds of megalithic ruins’ sites in many parts of the world (see category Submerged Ancient Ruins) which indicate, along with many legends and considerable ancient literature, that the end-of-the-Ice-Age sea level rise actually occured circa 1500 B.C., when the Exodus occured, the climate change at that time which is corroborated in the egyptian Ipuwer Papyrus, and by Plato’s description that before the sea level rise, Greece was much rainier.
The ancients of the Ice Age measured and mapped the globe for navigation by the stars, according to the stars’ apparent movement because of the constant rate of 72 years/degree for the rate of the earth’s axis’ wobble, precession, see article #2 at http://IceAgeCivilizations.com. And for a very clear big picture view of real ancient history, checkout http://genesisveracityfoundation.com.