Journeying through Gunung Leuser National Park—the last sanctuary of the Sumatran orangutan—over four days you will trek through dense, enveloping jungle on the lookout for reclusive orangutans, gibbons, hornbills and other incredible creatures.

As you make your way deeper into the jungle, the songs of native birds will grow louder and you will begin to feel as much a part of this unique ecosystem as the tall trees and native wildlife around you. At night, you’ll camp under the stars, lulled to sleep by the sounds of the rainforest.

To conclude your jungle adventure, you’ll tube down river rapids to Bukit Lawang.

As part of this challenge, you will have the opportunity to visit the Sumatran Orangutan Conservation Programme (SOCP) in Medan, whose vision is to prevent the extinction of the Sumatran orangutan. Since 1999, hundreds of orangutans have been brought to the centre, and more than 220 have been reintroduced into the wild. Here, you will hear from staff about the long-term protection of wild Sumatran orangutan populations through rescue, rehabilitation, habitat protection and education.

• Discover the majesty and mysticism of Sumatra’s last remaining tropical rainforest
• Trek dense, enveloping jungle by day and camp under the stars at night
• Spend a day at the Sumatran Orangutan Conservation Programme and learn how they are acting to prevent deforestation and habitat loss