In Thailand's north east, the Mighty Mekong River forms a border between the country's least developed and most unspoiled region, Isaan, and the exotic landlocked country of Laos.

The Sepik River is one of two vast tropical river systems in Papua New Guinea that meander through the densely forested lowlands of the world's second largest - and the world's tallest - island. Along the banks of the river and its many tributaries live sparsely scattered, remote villages scarcely contacted by the outside world, where people live a lifestyle that has changed little for thousands of years.

Mountain bikes are the perfect way to discover the wild spirit of untamed North Thailand, a region of jungle filled valleys, mountain-top temples, meandering rivers, and cultural encounters.

Not far from the shores of the Mekong River in Southern Laos lie two of the regions most remarkable treasures, the mythical World Heritage site of Vat Phou and the Oun Moung Temple.