Brick structure found in Kollidam riverbed traced to Sangam period, was used for water management: T.N. Archaeology Dept.
Archaeologists from Tamil Nadu's archaeology department uncovered a brick construction in the exposed bed of the Kollidam River, dating it to the Sangam era. The structure appears to have been part of an ancient water‑management system, indicating sophisticated hydraulic engineering in early South India. The find emerged after the river's water level fell last month.