A biodiversity hotspot in the beautiful Island of Sri Lanka, which has an international significance and has been, designated a Biosphere Reserve and a World Heritage Site by the UNESCO. It extends from east to west about 21km and a maximum of 7km from north to south. It has an abundance of endemic species, which includes a variety of trees, insects, amphibians, reptiles, birds and mammals. The most easily accessible routes is the roads of Kalawana-Weddagala Road and more convenient for visitors travelling from Colombo.
The Sinharaja reserve ranges about 200m to 1300m, which seems to have a rolling terrain comprising of a series of ridges and valley. The vegetation is described as a Tropical Lowland Rain forest, and has striking characteristics like the loftiness of its massive collection of trees, and the abundance of regeneration with a diversity of species. The vegetation has a humid wet evergreen forest type, and out of the 25 general endemic to Sri Lanka, 13 of them are represented in Sinharaja.
Due to the dense vegetation, wildlife is rarely seen though the most common larger mammal is the endemic Purple-faced Langur. One of the most important spectacles is the mixed feeding flock of birds, led by the Greater Racket-tailed Drongo and the noisy Orange-billed Babbler. From the replies include the Green pit viper and the Hump-nosed vipers; however there is a large variety of amphibians, especially the tree frogs. The invertebrates include the most common of the endemic Birdwing butterfly.