Hiyare Reservoir Rainforest is a small mysterious rainforest which has been known as an absolute paradise for wildlife enthusiasts. This is one of the best kept secrets of Galle, lying just 16 kilometers from the town. Hiyare Reservoir Rainforest is a secondary lowland rain forest with a high diversity and endemism of species. The Hiyare reservoir is a natural lake and is the main source of drinking water to the city of Galle. The area of the reservoir is collected of swamps, paddy fields and protected lowland consisting of important canopy tree species of which 9 are endemic.
There are 55 species of dragonflies, of which 12 are found only in the Hiyare area. 78 butterfly species, 55 dragonfly and 118 bird species have been identified with three endemic to this area.
Compared to the other national parks in Sri Lanka, Hiyare is more serene and peaceful with a quiet. One part of Hiyare is managed by the Sri Lankan Forest Department and the Wildlife Society of Galle administers the reservoir area. A unique Biodiversity Breeding Centre for imperiled species has been established and an Animal Rescue Program, which provides immediate medical and surgical care for damaged wildlife, maintains a tropical tree farm to promote reforestation and conducts regular classes to interested parties on the importance of conservation and protecting the biodiversity of Sri Lanka.