The Kithulgala forest is a secondary rain forest situated beside the Kelani River, one of our longest rivers. There is a tributary flowing through the forest to this river. The forest reserve has a high biodiversity. Though it is mostly secondary forest, it's faunal and floral diversity is very similar to a primary forest. Wild boar, Toque Macaque, Purple faced leaf monkey, and Barking deer are some of the interesting mammal species.
Among the interesting bird species Red faced Malkoha, Ceylon Blue Magpie, Oriental Dwarf Kingfisher, Frog Mouth and Layard's Parakeet are outstandin