Answer: Keeladi
Notes: Archaeologists have discovered a terracotta pipeline during the 10th phase of excavation at Keeladi, a Sangam Era site in Tamil Nadu. This find highlights advanced water management practices from over 2,600 years ago. Keeladi, located near Madurai, has revealed over 20,000 artifacts, suggesting the Sangam Era began around 600 BCE, earlier than previously thought. Additional discoveries include rice husks from 3,200 years ago and evidence of early iron technology.
