The Borra caves are natural caves located in Ananthagiri Hills of the Araku valley, which is situated 92 kilometers north from Vishakhapatnam district of Andhra Pradesh. The caves open with about 75 meters on vertical plane and 100 meters on horizontal plane.
This caves is a must see if you're visiting Vishakhapatnam. In the year 1807, William King, the British Geologist discovered this million years old cave. This cave is said to be the biggest in India considering the area it has spread geographically.