Special Cover issued during SIPEX 2011 - Philately exhibition organized by SIPA - South India Philatelists' Association, Chennai.
The cover design shows the rock art / paintings at Keelvalai in Villupuram District of Tamilnadu, a South Indian state. The paintings, people on a small boat with pole dates back to 1000 - 500 B.C. and drawn using red ochre. Even though these sites have been known by archaeologists for more than twenty years, very little has been done so far to preserve the art forms that are usually near granite quarrying sites.