Unique and rare Geological Arch on Tirumala Hill

తిరుమల కొండపై శిలాతోరణం (My click)

Unique and rare Geological Arch on Tirumala Hill, Andhra Pradesh. 

This is only of its kind in the whole of Asia. 

The age of the rock is estimated to be 2500 million years old 

and the age of the arch is computed as 1500 million years.