Gudiyam caves is in Chennai. It is a tourist place. You can visit there from chennai because it is only 90 kms from chennai and 17 kms from poondi reservoir. Gudiyam is a small village near that cave. so the cave is known as Gudiyam caves. If you like adventurous and trekking visit with your friends. In this article you can read about the location of the Gudiyam caves and how to visit there.