Yes, you heard it right...the beautiful Indonesia.
For more than two millenniums, scholars and scientists have been searching, looking, and digging information to uncover this mystery about the lost superior civilization. The story of Atlantis was mentioned by Plato in his writings Timaeus and Critias. In those writings he described the people as geniuses, wealthy, wise, and powerful people. The mastered maritime culture, commerce, sports, dance, music, and other form of arts. So yes, basically it's a developed society. Now, Santos is trying to make a further connection based on Plato's description of Atlantis, pointing that it has a similar condition with Indonesia, where tropical climate, irrigation system, large population, megalithic construction, natural resources, and volcanoes exist.
The controversial theory further described that Atlantis was located in Sundaland, which includes Southern part of India, Srilanka, Sumatera, Borneo Island, and Java. He even quite sure that some of the west part of Indonesia was the capital of Atlantis. He added that Indonesia was the most perfect place at that time to grow crops and herd cattle when global temperatures were 15 degrees Celcius below today's level.
Plato did mention the island as being 'under the sun', and described it as an island where rain forests, palm trees, coconuts, pineapples, bananas exists. Santos believes 'under the sun' as an expression of an 'equatorial' that is lying directly under the path of the sun. Most part of the earth were covered by thick glaciers, so civilizations can only occur in Indonesia. It was around 11,600 years ago (9600 B.C), an earthquake shook the continent, create a great tsunami, and sunk the island.
However, geologists beginning to asked Santos and challenged him on several findings and facts that mismatched his theory. It surely a great challenge for all scholars and scientists to prove the real existence of Atlantis. As for me, I'm proud to be the descendants of Atlantians :).