I am posting this here assuming that all PS readers are also lovers of Tamizh History. Some spectacular finds including skeletons and early Tamil Brahmi script from about 800 BC have been discovered near Adhichanallur. More details at:
I have read that movements of human beings in this region - adichanallur etc - goes back by 1,00,000 years (Refer "Tholliyal in Tamizhakam" by Tamilnadu archaeological div).
Humans have inhabited this place for a very long time. This new reference is stunning because it can shed light on pre-sangam age in tamil nadu about which we have little or no clue.
It is only with such vital evidences will we be able to see if there have been any connections between Indus region and the south.
I am sure Dr.Rajavelu would have read the scripts in the newly found tablets by now. Let us await further news in this direction.