Plato wrote about it. https://en.m.wikipedia.org/wiki/Timaeus_(dialogue) https://en.m.wikipedia.org/wiki/Timaeus_(dialogue) “Let me begin by observing, first

Plato wrote about it. https://en.m.wikipedia.org/wiki/Timaeus_(dialogue) https://en.m.wikipedia.org/wiki/Timaeus_(dialogue) “Let me begin by observing, first of all, that nine thousand was the sum of years which had elapsed since the war which was said to have taken place between all those who dwelt outside the Pillars of Heracles and those who dwelt within them: this war I am now to describe. Of the combatants on the one side the city of Athens was reported to have been the ruler, and to have directed the contest; the combatants on the other side were led by the kings of the islands of Atlantis,”