An adult orang-utan climbs through the trees on Salat Island pre-release site, run by the Borneo Orangutan Survival Foundation BOSF, in Central Kalimantan, Borneo, Indonesia on 27th May 2017. In this last stage of rehabilitation, the animals are observed as they learn how to forage for their own food and live independently. The island was established in partnership between BOSF and PT SSMS, a local palm oil company, who are both members of the Roundtable on Sustainable Palm Oil.
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