Summary:
- Researchers have found evidence that an ancient flood along the Vaigai River in Tamil Nadu may have contributed to the abandonment of the Keezhadi archaeological site, which was a thriving urban center over 2,000 years ago.
- The Keezhadi site, which has revealed important insights into the Sangam-era civilization, was likely abandoned due to the severe flooding of the Vaigai River, which may have destroyed the city's infrastructure and forced its residents to relocate.
- The study of sediment cores from the Vaigai River has provided clues about the timing and intensity of the ancient flood, which appears to have occurred around the 2nd century BCE, coinciding with the decline of the Keezhadi settlement.