Anything found by archeology and experts that is older than 5000 years ago is not encouraged in India.

The reason is the assumption that Indian history beyond this date is fictitious and the blind acceptance of the date of the Rig Veda at 5000 BC Rig Veda being the oldest literature.

Poompuhar, Tamil Nadu is dated twenty thousand years ago. A million year old advanced Tamil civilization site is near Chennai.

Jwalapuram, In Andhra is 74,000 years old.

I have written on these and many more.

These findings have surfaced due to the efforts of private researchers.

Mahabalipuram is assigned Around seventh century AD because of Pallava Dynasty.

However Mahabalipuram is much older.

‘Mahabalipuram’s early history is completely shrouded in mystery. Ancient mariners considered this place the land of the Seven Pagodas. There are others who think that Mahabalipuram suffered from a great flood between 10,000 and 13,000 BCE. Controversial historian Graham Hancock was one of the core members of a team of divers from Indian National Institute of Oceanography and the Scientific Exploration Society based in Dorset, UK who surveyed the ocean bed near Mahabalipuram in 2002 CE. He is more inclined to believe the flood theory. His exploration also afforded him a fair glimpse of the vast extent of submerged ruins of the city. After his underwater exploration, he reportedly commented, “I have argued for many years that the world’s flood myths deserve to be taken seriously, a view that most Western academics reject … But here in Mahabalipuram, we have proved the myths right and the academics wrong.”

Source. Ancient History Encyclopedia

‘The SES announced: “A joint expedition of 25 divers from the Scientific Exploration Society and India’s National Institute of Oceanography led by Monty Halls and accompanied by Graham Hancock, have discovered an extensive area with a series of structuresap that clearly show man made attributes, at a depth of
5-7 meters offshore of Mahabalipuram in Tamil Nadu.
“The scale of the submerged ruins, covering several square miles and at distances of up to a mile from shore, ranks this as a major marine-archaeological discovery as spectacular as the ruined cities submerged off Alexandria in Egypt.”
India’s NIO said in a statement: “A team of underwater archaeologists from National Institute of Oceanography NIO have successfully `unearthed’ evidence of submerged structures off Mahabalipuram and established first-ever proof of the popular belief that the Shore temple of Mahabalipuram is the remnant of series of total seven of such temples built that have been submerged in succession. The discovery was made during a joint underwater exploration with the Scientific Exploration Society, U.K.”
NIO said:
Underwater investigations were carried out at 5 locations in the 5 – 8 m water depths, 500 to 700 m off Shore temple.
Investigations at each location have shown presence of the construction of stone masonry, remains of walls, a big square rock cut remains, scattered square and rectangular stone blocks, big platform leading the steps to it amidst of the geological formations of the rocks that occur locally.
Most of the structures are badly damaged and scattered in a vast area, having biological growth of barnacles, mussels and other organisms.
The construction pattern and area, about 100m X 50m, appears to be same at each location. The actual area covered by ruins may extend well beyond the explored locations.
The possible date of the ruins may be 1500-1200 years BP. Pallava dynasty, ruling the area during the period, has constructed many such rock cut and structural temples in Mahabalipuram and Kanchipuram.
The last claim is questioned by 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 is this date.”
If that were true, it would be a spectacular development. Previous archaeological opinion recognizes no culture in India 6,000 years ago capable of building anything much.Hancock says this discovery proves scientists should be more open-minded. “I have argued for many years that the world’s flood myths deserve to be taken seriously, a view that most Western academics reject. “But here in Mahabalipuram, we have proved the myths right and the academics wrong.”
Hancock believes far more research needs to be done on underwater relics.“Between 17,000 years ago and 7000 years ago, at the end of the last Ice Age, terrible things happened to the world our ancestors lived in,” he says. “Great ice caps over northern Europe and north America melted down, huge floods ripped across the earth,
sea-level rose by more than 100 meters, and about 25 million square kilometers of formerly habitable lands were swallowed up by the waves.
“Marine archaeology has been possible as a scholarly disciplinefor about 50 years — since the introduction of scuba. In that time, according to Nick Flemming, the doyen of British marine archaeology, only 500 submerged sites have been found worldwide containing the remains of any form of man-made structure or of lithic artifacts. Of these sites only 100 — that’s 100 in the whole world! — are more than 3000 years old.”
Hancock, who was understandably resentful about the NIO’s silence in his pivotal role in making the diving expedition happen — SES gave him full recognition — was himself quite generous about who deserved the greatest credit:
“Of course the real discoverers of this amazing and very extensive submerged site are the local fishermen of Mahabalipuram. My role was simply to take what they had to say seriously and to take the town’s powerful and distinctive flood myths seriously. Since no diving had ever been done to
investigate these neglected myths and sightings I decided that a proper expedition had to be mounted. To this end, about a year ago, I brought together my friends at the Scientific Exploration Society in Britain and the National Institute of Oceanography in India and we embarked on the long process that has finally culminated in the discovery of a major and hitherto completely unknown submerged archaeological site.”
Interested readers can visit the following Web sites for more information. The Scientific Exploration Society’s Web site at http://www.india-atlantis.org . And Graham Hancock’s Web site at http://www.grahamhancock.com

Reference and Citation.

http://www.orientalthane.com/archaeology/news_may_24.htm