Spotting orangutans in Sumatra

Sumatra is home to one of the largest national parks in Indonesia, Gunung Leuser National Park. The rainforest covers 950,000 hectares and is a protected World Heritage Site. It is the habitat of more than 750 animal species, including endangered species such as orangutans, elephants, leopards, tigers and rhinos. You will also find species here that you will not come across anywhere else in the world, such as the Thomas leaf monkey. Led by a ranger, you can go trekking through the national park. We tell you how.