On arrival at Pangkalan Bun airport, meeting service then transfer to Kumai, seaport and the gate to reach National Park. Onboard, crossing Kumai river in approximately 15 minutes to reach Seikonyer river, the min river in National Park. Lunch will be served on boat by our own cook. We are riding on the boat about 2 hours to reach Rimba Lodge where you stay overnight for. Check in at the lodge, enjoy the view surrounding. At 16.30 we continue our tour to observe Proboscis monkeys along the riverbanks.