Gunung Leuser

But not only orangutans, but also home to Thomas-leaf monkeys endemic to the Leuser rainforests, bands of macaques, hornbills, sun bears, unique butterflies and the last remaining populations of Sumatran elephants, tigers and rhinos. This rainforest is a treasure of biodiversity, impenetrable and covered by a dense tree canopy. The park’s landscape consists of lush tropical rainforests, which are among the oldest in the world. But the ecosystem is under threat from oil palm plantations, illegal logging, population pressure and wildlife poaching.