Day 1: Arrive at Pangkalan Bun Airport in Central Kalimantan, where you will meet your local guide and transfer to the nearby port of Kumai. Board a traditional riverboat, known as a 'Klotok', and get comfortable in your cabin as you journey along the Sekonyer River into Tanjung Puting National Park. This sprawling park with its jungles and swamps is famous for its orangutan conservation and is home to leopards, lizards and more than 600 species of birds. In the afternoon, head out in search of orangutans and proboscis monkeys. Your guide will point out other species of animals and birds along the way. Day 2: Wake up early and take in the sights as you travel upstream to the Sekonyer River. Cruise along a tributary called ‘Crocodile River’ and try to spot the reptiles sunning themselves. Enjoy the scenery and tuck into a fresh lunch prepared by the crew before reaching Camp Leakey, the renowned orangutan research and rehabilitation center located in the heart of national park. Once you arrive, meet the rangers and watch the orangutans’ afternoon feeding. If you like, take a short trek into the jungles surrounding the camp before heading back to the boat. Day 3: After breakfast, sail to the orangutan feeding station at Pondok Tanggui. The jungle becomes dense as you slowly make your way north, and from the deck of the boat you will be able to view a variety of wildlife. Reach Pondok Tanggui in time for the orangutans’ morning feed. Accompanied by your guide and a park ranger, hike along small tracks deep into the jungle where the feeding area is located. Get up close to these wonderful primates before returning to your boat. Your next stop is the Pesalat Reforestation Camp, where parts of the national park that have been destroyed over the years by illegal loggers and forest fires are being restored. While here, you can choose a tree, plant it and also name it. After, enjoy a delicious lunch onboard as you sail back to Kumai. During the return journey, you are likely to see proboscis monkeys high up in the trees. Day 4 : Soon after breakfast, you will reach Kumai from where you will be transferred to Pangkalan Bun airport to catch your flight to your next destination.