Cauvery River rises in the western ghats and flows eastwards and ends itself by merging to the Bay of Bengal. This is where the delta is formed. This is an extremely fertile land and there are a number of coastal towns in this region. The Nagapattinam district here was severely affected during the tsunami that occurred in the year of 2004. Up to 7000 lives were lost during that time and thousands of people lost their homes. The place is still trying to recover itself from that shock. The whole region is wonderful and worth the visit.