Upon arrival in Pangkalanbuun you’ll be met and transferred to Kumai for boarding to the Kelotok. Leaving Kumai River, you’ll have an opportunity to see riverfront life. Then, cruising to Sekonyer River, the estuarine habitat with unique vegetation called mangrove, before your first stop to Tanjung Harapan Camp to visit the Orangutan feeding station at 3pm. After seeing the Orangutans cruise downstream to see groups of Proboscis monkeys - the endemic primate in Borneo. The boat will anchor and you will sleep overnight in the Kelotok beneath the fireflies. If the weather is good (no rain or wind) you can see millions of fireflies like a Christmas tree, but this isn’t guaranteed. Dinner beneath fireflies.