BOS Nyaru Menteng
The BOS Nyaru Menteng Reintroduction Center was founded in 1999 by Lone Dröscher Nielsen and Odom Kisar. It is today the home of more than 600 orphaned and displaced orangutans and hundreds of employees.
The center is based 28 km North of Palangka Raya in the Province of Central Kalimantan in the Indonesian part of Borneo, and since its humble beginnings has now become the world's largest orangutan conservation facility with numerous cages, island, clinics, vehicles, training forests and hundreds of staff. 
The forest around the center serves as the perfect place when the young orangutans are taught how to survive in the wild. Five small islands in the river nearby are used as the first home for the orangutans as they begin their new lives without their caretakers. The center also has its own fruit-plantation and a big nature reserve, which the orangutans can be released into once they are ready for a life in freedom.
The Nyaru Menteng Work-staff consists of 170 people; this number consists of babysitters, assistants, people working in the medical department, guards and other workers. The number of orphaned orangutans in Nyaru Menteng is now approximately 650.
The center lies in a forest area, which for a while has been functioning as a wild, botanic garden. It has been under the responsibility of the rainforest authorities, and can therefore display a rich diversity in both plants and wildlife. The forest is a frequently used recreational area by the students at the university in Palangka Raya, and in the weekends, people also come from the city to walk in the forest. It is not possible for the visitors to get in too close contact with the orangutans at the center. The orangutans are trained to become wild and it is therefore imperative that they have as little contact with human beings as possible.
“The Workers' Village” All the employees are, if possible, hired from the areas closest to the center. But as more and more people are needed, it has become necessary to hire people from areas further away. So right next to the main entrance of the center, a small village has been build, which has a common-house that all employees can use freely.
The Islands Kaja, Palas I. and II., Hampapak Matei and Bangamat are all islands in the Rongan River, which runs behind the clinic in Nyaru Menteng. From there, there is a mere 8 km drive to the small town of Sei Gohong, which is the most important harbor in the area. There are only primitive feeding-platforms and jetties on the islands.
The Information Center Education and information are important tools in the fight against illegal cutting of forest and killings of orangutans. Therefore local schools are invited to visit the center, and information campaigns about alternatives to the cutting are send out all over Borneo. On Sundays the information center is open to everyone.
The Fruit plantation Nyaru Menteng has its very own fruit plantation called: “Nyaru Menteng Lestari” (Lestari means: “Sustainable”). It is a piece of land of 3 ha, which is planted with many different fruit bearing trees, such as: mango, pineapple and rambutan. Soon the fruit-plantation will be the primary supplier of fruit to the orangutans living in Nyaru Menteng.
