Gunung Leuser National Park or the Leuser Ecosystem is a Natural Conservation Area covering an area of 1,094,692 hectares, which is administratively located in two provinces of Aceh and North Sumatra . This National Park is a World Heritage Site recognized by UNESCO.
This National Park is managed by the zoning system for the purpose of research, science, education, cultivation support, tourism, and recreation. Territory of Gunung Leuser National Park (TNGL) include native ecosystems from coast to high mountain ecosystems are covered with dense forests typical of tropical rain, and a group of various nature reserves and forests, namely: Nature Reserve Gunung Leuser, Kappi Nature Reserve, Nature Reserve Kluet, Sikundur -Langkat Wildlife Reserve, Ketambe Research Station, West Singkil, and Dolok Sembilin.
There are approximately 130 species can be identified in the Gunung Leuser National Park, including: Sumatran tigers, elephants, rhinos, orangutans, gibbons, monkeys, leopards, reptiles, fish, and also about 325 species of birds.