If you are a lover of nature and wildlife, this is the best place you can visit in Sri Lanka. This is the country's last viable area of primary tropical rainforest. More than 60% of the trees are endemic & many of them are considered rare. 50% of Sri Lankan's endemics species of animals (butterfly, amphibians, birds, snakes and fish species). It's home to 95% endemic birds. Birds tend to move in mixed feeding flocks, invariably led by the fearless Sri Lanka crested drongo and the noisy orange-billed babbler. Of Sri Lanka's 26 endemic birds, the 20 rainforest species all occur here, including the elusive red-faced malkoha, green-billed coucal and Sri Lanka blue magpie. Reptiles include the endemic green pit viper and hump-nosed vipers, & there are a large variety of amphibians, especially tree frogs. Invertebrates include the endemic Sri Lankan birdwing butterfly and leeches. It believes that about 3 elephants & some leopards are living here. Endemic purple-faced langur is common.