The Rock Fort Ganapathi Temple also known as the Uchipillaiyar Koil is situated at an 83 m tall rock. This rock is said to be the oldest rock in the world dating back to 3800 million years. This temple is a combination of the two famous Hindu Temples of the 7th century that were devoted to Lord Shiva and Lord Ganesha. The temple has to be reached by climbing about 344 steps.