Atlantis is a legendary island that was first mentioned in Plato’s dialogues Timaeus and Critias.
In Plato’s account, Atlantis was a naval power that conquered many parts of Western Europe and Africa in 9600 B.C.
Atlantis sank into the ocean “in a single day and night of misfortune” after a failed attempt to invade Athens.
Some geologists thinks that the legend of Atlantis, a mythical island city that sank under the ocean, may have a basis in fact.
About 11,000 years ago, when the last ice age ended, a small island sat in what is now the Strait of Gibraltar, south of Spain.
When the ice melted, the sea levels rose, and over a 300-year period the island became completely submerged.
Many believe Atlantis now lies as deep as 400 feet (122 m) under water.
Stories about this event may have been told and retold over the centuries until the Atlantis legend took shape.