Wild and rugged, with volcanoes, steamy jungles and seething urban centres, Sumatra is the 6th largest island in the world and has much to entice travellers.
Seeing Orang-utans in their natural habitat in the Gunung Leuser National Park is one of the main draws.
From Tangkahan, the village on the edge of the park enjoy jungle treks and experience Asian elephants at close quarters. Lake Toba is the world's largest volcanic lake and a scenic highlight of Sumatra.