Periya Mandapam limestone caves
A natural cave system can be found in Jaffna, which is called the Periya Mandapam limestone caves. This is a lesser-known place even for the locals. A large tree in the middle of the cave entrance stands guard, providing shade to the door. The government had not performed any effort to build these caves into an attraction, and therefore not a lot of research had been done before. We recommend you take a ladder to get into the entrance, explore the caves from outside, and not go in since no one knows what could be down there.