Edit: Added some links and quotes, further research results
It’s almost a footnote in this article but it has deep implications.
Since the tsunami on 26 December, marine archaeologists have also discovered evidence of large structures on the seabed up to 1km out to sea.
They think the structures may be part of a former, legendary city of Mahabalipuram.
Myths state the city was destroyed by a flood sent by gods envious of its beauty.
It means one thing for a city to be swept by tsunamis. Afterwards, they are still above sealevel. In this case, the ruins are a full kilometer out to sea. The only way this could happen is that the sea rose over the city permanently. Considering that this is the Indian Ocean, Occam’s Razor implies a global sea level rise, rather than a local occurance. The last such global occurance was at the end of the Pleistocene (aka. the end of the last Ice Age), where global sealevels rose 10-30 meters (30-90 feet), about 10-12 thousand years ago. There is no way, that I know of, that these ruins could possibly be more modern then that.
… Hancock, who says a scientist has told him it could be 6,000 years old.
Durham University geologist Glenn Milne told him in an e-mail: “I had a chat with some of my colleagues here in the dept. of geological sciences and it is probably reasonable to assume that there has been very little vertical tectonic motion in this region [i.e. the coastal region around Mahabalipuram] during the past five thousand years or so. Therefore, the dominant process driving sea-level change will have been due to the melting of the Late Pleistocene ice sheets. Looking at predictions from a computer model of this process suggests that the area where the structures exist would have been submerged around six thousand years ago. Of course, there is some uncertainty in the model predictions and so there is a flexibility of roughly plus or minus one thousand years in this date.”
What this states is that official doctrine, holding that civilization started with Sumeria and there that were no prior civilizations, is completely wrong! These same eggheads are insistent that agriculture could not possibly have existed before 10,000 years ago. Sumer was founded about six thousand years ago. There are quite a few famous PhDs that are going to be upset about this and will take great efforts to rationalise this within doctrine and their favorite pet theories. The reason that those ruins in the Bermuda Triangle were ignored, as probable natural formations, is largely because of this doctrine. If they are indeed ancient roadbeds, under the sea, then they would have to have been built before the seas rose over them. There is insuffient evidence to support the land sinking into the sea and, given the above doctrine, those roads must be natural formations (even though no mechanism for their natural formation has even been postulated), or so goes the rationalisation.
I’ve always held that such a doctrine doesn’t make sense. Given the nature of humans and the fact that we achieved our present state of evolution over 120,000 years ago, it is unlikely that mankind deigned to live off nuts and berries for over 90,000 years. As a species, we are just too generally lazy for that and we like our comforts too much. Getting back to the evidence, you cannot have cities without agriculture. It’s a necessary ingredient. Also, you cannot have just one city or it never becomes a city. Cities are trade centers.
If there is one then there are many more. I suspect that the bottom of the South China sea, and the coast off the Malaysian penninsula will also yield results. If it does then they also had reasonably efficient trans-oceanic travel. Now old stories of Atlantis, Iss, Lyonesse, and the Seven Rishi Cities don’t sound so much like fables as they do very ancient history (I ignore modern tales of Lemuria, as pure fiction). Further, that those may indeed be roadbeds, under the sea in Bermuda, and they may indeed point to the location of Atlantis or another contemperaneous city site. Up until this time, most archeologists ignore the submarine coasts because current doctrine says that there was no civilization before Sumer.
This also pounds a very large nail into the Intelligent Design school, that maintains that everything was created only 7,000 years ago, based on bibilical interpretation. The bible mentions no civilization prior to Sumer.
It is my thought that there was a civilization at the end of the Pleistocene. That it was coastally oriented and that it got wiped out by the gradually rising sealevel of the global warming trend. This includes farms, villages, and cities, most of which are now lost under 10,000 years of oceanic silt. That it took only 4,000 years to restart that civilization on higher ground, in Sumeria. There may have been other complications as well, like a massive human population die-back caused by an order of magnituide increase in atmospheric CO2 (the CO2 rise is well documented as an associated effect of the end of the Ice Age).
Looking at the current warming trend, it looks like it’s happening again. 
Also see:
