Distance from Ella – 15.6 km (35 minutes)
Nil Diya Pokuna is an underwater pond which is situated in a cave or a tunnel complex in Ella which is believed to have been built by king Rawana. The pond lies 80 meters deep inside a mountain cave in Karandagolla. The cave can be accessed via two independent entrances, of which the better-known one is situated in a forest reservation in the area. A villager then discovered a second entrance on a private property. The cave has a rabbit hole entrance through which the pond can be reached. It is a place to be explored by the adventurous and caution should be taken during this journey. The water of the pond is crystal clear and gives a blue tinge of color when it reflects with light.