Al Oya National Park is located in south eastern Sri Lanka and west of Ampara. It was created by the Gal Oya Development Board in 1954, primarily to protect the catchment area of the Senanayake Samudra Reservoir. In 1965 it was handed over to the Department of Wildlife Conservation. The National Park is considered one of the most important places for eco-tourism rich in flora and fauna. About 45% of the park is covered by evergreen forests and another 33% are covered by savanna areas. The 25,900-acre park has about 32 species of mammals, including langurs, endemic toque macaques, leopards, sloths, elephants, wild boar, water buffalo and three species of deer.
Birdwatchers have seen about 150 of Sri Lanka's 430 bird species in the region.
It is the only national park where multi-hour boat safaris are offered in combination with hikes and jeep safaris. Staying at the Galy Oya Lodge is another "highlight" of this special activity.