At 11 km from Madurai you find this mass of rocks composed largely of granite. Inside, the hill is honey-combed with caves, important archeological sites as well as homes for thousands of insectivorous bats of nine species.
An archeologic Temple cave on the left, see next photo.
Dear Oochappan, I've been looking for this site ever since Pongal last Jan.
Here it is! What a beautiful place for a mela. Your photos are beautiful, too.