remember, Plato said that Atlantis was thousands of years before HIM...and even Thera was 1200 years before Plato. Records in those times were pretty sparse and vague and based on legends and hearsay. Distances and directions were not measure exactly, and the civizilations we DO know about from 10000-12000 years ago that were not destroyed in disasters were pretty primitive.

It takes a huge leap of faith to assume that Plato had any real 'data'. All the looking may well find interesting stuff about some settlements and fill in some gaps, but I won't hold my breath that we ever discover a large, advanced 'different' group worthy of attaching the name "Atlantis" to.