The tropical island of Borneo is the world's third largest island, and divided between Indonesia in the south and Malaysia and Brunei in the north. It is famous as being the home of one of the oldest rainforests in the world - around 140 million years old, the rainforests contain 15,000 species of plants, around 420 varieties of birds and 220 species of mammals. The most famous and iconic of these mammals is certainly the Bornean orangutan, a highly intelligent ape with distinctive long arms and a shaggy reddish coat.
In the far north of the island is its highest mountain, the prominent 4,096m-tall Mount Kinabalu. This is a very popular trekking peak that can be climbed in two days without the use of any specialist mountaineering equipment.