Sinharaja is well known famous rain forest in Sri lanka.Sinharaja is a national park.Sinharaja located Sabaragamuwa and southern Provinces in Sri lanka.It is the only undisturbed rain forest left in Sri lanka.It is about 9000 hector's in extent.Many of the plants are very rare.Over 60% of the tree species are found only in the low land wet zone of Sri lanka.especially in Sinharaja.If those species of trees are allowed to get destroyed,the world would lose them altogether. So it is important that much effort is made to conserve this rich,valuable and forgile habitat.This unique rain forest nurtures not only magnificent tree species that top 40 meters in height , but alsomedicinal plants such as maha hedaya .Endemic extends beyond exotic flora to butterflies , a dozen endemic species of birds and even the rare Ramanella plamata , the only microhylid (genus of frog) recorded so far. The sinharaja rain forest is the largest rain forest in Sri lanka. In 1840 Sinharaja become a crown property.In 1988 it was made a National Wilderness area.In 1989 UNESCO included the Sinharaja forest in the world heritage list as the First national Heritage of Sri lanka. The Sinharaja forest is home to many rare animals, birds, butterflies, insects, reptiles and trees.Ferns and mosses grow well as the climate is humid because of heavy rain fall. Conservation of Sinharaja is of vital necessity.It ensures the maintenance of water resources.It also controls floods, which is a constant threat due to heavy rainfall in the area. Sinharaja forest is maintained by Department of Forest Conservation. It is government property.No one can enter the Sinharaja forest without permission.Rangers all ways keep eye on it.The drive from Colombo to Sinharaja takes about 4 hours passing through some stunning hill country on the way.