The Rockfort complex is built upon one of the oldest rock formations on earth, and the Ucchi Pillayar (Ganesha) temple sits at its very summit, reached by climbing 417 steps cut into the living rock. According to local legend, this is the spot where Lord Ganesha, having helped carry the Ranganatha idol at nearby Srirangam, ran to the hilltop. From the top, pilgrims are rewarded with a breathtaking panorama of Trichy, the Kaveri river and the vast Srirangam temple. Partway up the rock stands the ancient Thayumanaswami temple, dedicated to Shiva.