What is Ring Wells?
As the name suggests, ring wells were stacks of pots or rings, mostly modeled out of ceramic and terracotta. Their creation dates back to the Mauryan Empire, where they were used for drainage and dumping of trash. The Tamil Nadu state archaeological agency has discovered the upper portion of what may be another ring well at Agaram in the Keeladi cluster in the Sivaganga district. The most intriguing remains of the ancient civilization, which thrived on the banks of the Vaigai, have been ring wells.