Located in south-west Sri Lanka, Sinharaja is the country's last viable are of primary tropical rainforest. More than 60% of the trees are endemic and many of them are considered rare. There is mch endemic wildlife, especially birds, but the reserve is aslo home to over 50% of Sri Lanka's endemic species of mammals and butterflies, as well as many kinds of insects, reptiles and rare amphibians.

Mammals

The near-endemic and strict endemic mammals harbors in the area listed below. Strict endemic species marked with an asterisk.

1. Asian Highland Shrew
2. Jungle Shrew
3. Thailand Roundleaf Bat
4. Purple-faced Langur
5. Golden Palm Civet
6. Layard's Palm Squirrel
7. Travancore Fying Squirrel
8. Ceylon Spiny Mouse
9. Nolthenius's Long-tailed Climbing Mouse

A rainforest can be described as an extremely stable eco-system because it experiences rain for more than six months of the year, so it is hardly surprising that in Sri Lanka they are all located in the wet zone areas. Made up of a massively complex structure of tall trees, a wild profusion of flowers and a vast array of birds, insects, reptiles and mammals that are all independent n each other, there is no end to what may be discovered during a rainforest exploration in Sri Lanka