The 83m high Rock Fort is the only outcrop in the otherwise flat land of the city. The rock is one of the oldest in the world-approximately 3.800 million years, which makes it as old as the rocks of Greenland and older than the Himalayas. The sheer abruptness of its rise is a thrill in itself, but the actual centre of attraction is not the fort itself, of which very little remains, but the temple at the summit. 344 steps hewn out of rock lead to the top where there are inscriptions dating back to the 3rd century.B.C.

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Srirangam, also known as Thiruvarangam, is a small island town adjoining Tiruchirapalli ( also known shortly as Trichy or Tiruchi) in South India. Srirangam is bounded by the Kaveri River (also known as Cauvery river) on one side, and the Kaveri tributary Kollidam (Coleroon) on the other. Srirangam is home to a significant population of Vaishnavites (followers of Lord Vishnu, one of the triumverate of Hindu Gods the other two being Lord Siva, the Destroyer and Lord Brahma, the Creator).
 

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www.srirangam.org

Mukkombu is a beautiful excursion centre, just 18 kms from Tiruchirappalli on the river banks of Cauvery and Kollidam. This place is called upper dam. It is an attraction for the tourists and also for the people of all ages by its park, greenish garden scince park,toy train,merry go round, fishing facility, and boating facility

Grand Anaicut (Kallanai  Dam)- An   Ancient dam built by Karikala Chola across the river Cavery in 2 AD.