Plato describes Atlantis in two dialogues: Timaeus and Critias. The account is unusually specific — concentric rings of land and water, a metal called orichalcum, a navy of 1,200 ships, an empire that stretched from beyond the Pillars of Hercules to threaten Egypt itself.
He attributes the story to the Egyptian priests of Sais, who told the Athenian statesman Solon two centuries earlier that 'you Greeks are children — you have no memory of the great civilizations that came before.' The Egyptians dated the destruction to 9,000 years before Solon — placing it at the end of the last ice age, when geological evidence confirms massive sea-level rise.
Most classicists treat Atlantis as Plato's literary invention — a philosophical parable about hubris. But Plato himself was emphatic that the story was historical, and unusually careful in giving sources, dates, and details. No undisputed physical evidence of Atlantis has ever been found.
Plato gave Atlantis a precise date: 9,000 years before his own time. That places its destruction around 9600 BCE — the exact end of the last ice age, when sea levels rose hundreds of feet.
Atlantis remains the master template for every story about a brilliant civilization erased from the map.