Following the establishment of Siddhar Gnana Koodam, and traveling the world to spread his knowledge, Agastya returned to Agastya Mala, the point on the Pothigai hills where he merged into the cosmos. A temple dedicated to him is built here, close to the Papanasam Falls, on the banks of the Thamirabarani River. Pilgrims believe Sage Agastya gives appearances to sincere aspirants and devotees.