The Tamil Nadu State Department of Archaeology has found Iron Age cultural material during an exploration along the banks of the Pambai river. The survey covered several villages in Villupuram district, and remains were located at both habitation mounds and burial sites. The finds include Iron Age urn burials, potsherds, glass beads, ring wells and ceramics. The materials belong to the Iron Age, Early Historic and Historic periods, pointing to long and continuous human settlement in the region.