Goododa, less destroyed than forgotten then rediscovered. They were forgotten because of the royal monopolies to try and gain the upper hand in all respects to their people and to foreigners.
I'm seeing a lot of things about Atlantis, from being Antarctica to below the South China Sea. I reckon it was either Crete, but I am today tending towards the city of Heliki in the Peloponessus, Greece. It was the principal city of worship of the god Poseidon (god of earthquakes and the seas) and as such was very wealthy and technologically advanced as Greek life and culture revolved around the Mediterranean Sea. Situated in thw wonderful region of Achaea, reknowned for being more war-like than others, the revolt described in the Atlantis myth by Plato could have been a civil war between the Achaean states. In 377 (?) BC a giant earthquake struck and the Corinthian Gulf flooded, killing all its' inhabitants. Sediment washed down from the large mountains directly to the south washed down, filing in the water so the city was lost. It was discovered not long ago by archeoligists a fair distance underground.