Silathoranam is a natural rock formation in
the form of an arch, near the Chakra Tirtham. Geologists have identified
the rocks on the hill as pre-Cambrian, and this arch formation suggests an
antiquity of several million years to the Tirumala hill.
It is said that there are only two other natural rock arches of such great antiquity in the world.
Rail: The nearest railhead is
Road: From Tirupati railway station one can take a bus or hire a taxi to go to Tirumala. The best way to go to Silathoranam is to hire a taxi at Tirumala.