Talk:Kallanai

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[edit] considered the oldest water-diversion structure in the world still in use.

it says that the dam built by chola was in the 1st or the 2nd century. And further says that “It is considered the oldest water-diversion structure in the world still in use” How can that be the oldest when king Pandukabhaya In Sri Lanka build the “Abhaya wewa “ ( basawakkulama tank ) in the 4th century BC which is still in use older than this.