Sinharaja Rain Forest (a UNESCO World Heritage Site), the last viable remnant of Sri Lanka’s tropical lowland rainforest spanning an area of 18900 acres is located within Sabaragamuwa and Southern provinces of the south-west lowland wet zone of Sri Lanka. Sinharaja is bounded by rivers on three sides. On the north, Sinharaja is bounded by the Napola Dola and Koskulana Ganga. On the south and south-west are the rivers Maha Dola and Gin Ganga. On the west are the river Kalukandawa Ela and river Kudawa Ganga. To the east of Sinharaja is an ancient footpath near Beverley Tea Estate and by the Denuwa Kanda.
From Northern or western parts of the country you can reach Sinharaja Forest Reserve via Ratnapura, Kiriella, Kalawana, Weddala. From the South you can enter Sinharaja Rain Forest from Deniya. Coming form Hambantota, Udawalawe you can enter Sinharaja from Rakwana side.
Sinharaja Forest reserve is also 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.