Let's consider the issue of Plato's works. There is potential proof what Plato may have been referring to was the Minoan civilization that suffered a catastrophic setback when the island of Thera was destroyed in a spectacular volcanic eruption circa 1200 B.C. that destroyed the volcano in the center of the island and caused it to collapse into the sea (that's why Thera today is three islands, not a single one).
When Thera was destroyed, it set up a massive tsunami that travelled all over the Aegean Sea. We do know that the northern coast of Crete suffered massive damage from a tsunami about the same time as the Thera eruption, so what happened was that the major Minoan outposts all over the Aegean Sea were destroyed. Once the Minoan civilization suffered that disaster, they were easy pickings for the Myceneans (the people described in Homer's works) and the later Dorians.
When Plato talked about Solon's story, he said the civilization was destroyed some 9,000 years ago as described by Egyptian scholars. However, there are some scholars who said that Solon may have mistranslated what the Egyptians said, so what Solon may have described happened in reality only 900 years earlier, which closely matches the fall of the Minoan civilization as result of the Thera disaster.