South East Asia’s tallest mountain, Mt. Kinabalu, towers over the Sulu Sea and Borneo’s sweeping jungles. In the east of the world’s third largest island Orang-utans populate the trees of Sepilok, whilst on the Malayan Peninsula rivers gush through Taman Negara, cloud forests share the highlands with tea plantations and strawberry farms and the country’s modern capital is a melting pot of cultures. We peek behind the green curtain of Malaysia’s primeval forests as we don our hiking boots and go trekking around Borneo and beyond.