Attirampakkam
Attirampakkam or Athirampakkam is a village located 60 kilometers away from Chennai, Tamil Nadu, India. The oldest known stone tools in India were discovered near the village, which became the type site for the Madrasian culture.Discovery and dating of artifacts
A large number of stone tools were recovered from Attirampakkam over 20 years by archaeologists from the Sharma Centre for Heritage Education in India and other Indian institutions. Due to the paucity of any hominine fossils or bones recovered yet from the site or from South Asia as a whole, it is currently not possible to conclude which hominin species had created these tools.
By performing a luminescence dating method called post-Infrared-Stimulated Luminescence on about 7,200 artifacts found at Attirampakkam, researchers have made a chronology of Attirampakkam stone tool technology with a span of about 200,000 years. Latest studies indicate that the Levallois technology used at Attirampakkam emerged at about 385,000 years ago, at a time period when processes signifying the end of the Acheulian culture occurred and a Middle Palaeolithic culture had emerged.