Rockfort Rock Fort Temple or Ucchi Pillayar koil, is a combination of two famous 7th century Hindu temples, one dedicated to Lord Ganesh and the other dedicated to Lord Shiva, located atop a small rock in Trichi, India. Geologically the 83m high rock is said to be one of the oldest in the world, dating over 3 billion years ago, and mythologically this rock is the place where Lord Ganesh ran from King Vibishana, after establishing the Ranganathaswamy deity in Srirangam. The name rockfort comes from the fact that the place was used for military fortification first by the Vijayanagar emperors and later by the British during the Carnatic wars.

The temple complex is composed of two parts - A shiva temple (Thayumanaswamy) carved in the middle of the rock and a Pillayar (Ganesh)temple at the top portion of the rock. The Shiva temple is the bigger one, housing a massive stone statue of Shiva in the form of Linga along with a separate sanctum for goddess Parvati. The temple is mystic in its nature with an awe-inspiring rock architecture. The Ganesh temple is much smaller with an access through steep steps carved on the rock and provides a stunning view of Trichi, Srirangam and the rivers Kaveri and Kollidam. Due to its ancient and impressive architecture created by the Pallavas, the temple is maintained by the Archaeological department of India.