Unesco World Heritage Site Sinharaja is the last major undisturbed area of rainforest in Sri Lanka. The reserve comprises 18,899 hectares of natural and modified forest, measuring about 21 km east to west and 3,7 km north to south.
Sinharaja has a wild profusion of flora. The canopy trees reach heights of up to 45m, with the next layer down topping 30m. There are almost 130 types of endemic trees and woody climbers. As for fauna, sambar, barking deer, wild boar, purple-faced langurs and squirrels are fairly common. Sinharaja also has 45 species of reptiles and 160 species of birds. Sinharaja has leeches in abundance, therefore make sure you wear long trousers, long socks and trekking shoes (sneakers); repellent sprayed on trousers and shoes will also help.