Sumatra rainforest

Located within the great Leuser Ecosystem, this 6.4-million-acre tropical wilderness is the last place on Earth where the Critically Endangered Sumatran Rhinoceros, Sumatran Orangutan, Sumatran Elephant, and Sumatran Tiger are all found within one ecosystem. As the largest surviving block of rainforest remaining in Sumatra, it is the only place in the world capable of supporting the survival of all four species.