"But if they had advanced civilizations, where are the records and the remains? Can geological forces erase them that thoroughly? What do you think?
I think they are all underwater from the ice melt from the last Ice Age. Hopefully the 9,500 year old underwater city off India and the one (hopefully) off the coast of Cuba will change history as we know it. There are undoubtdly underwater cities all over the world. The legend of Atlantis is just 'the tip of the iceberg', so to speak.