This series takes viewers on an exotic journey through India, following the flow of the mighty River Ganges from the glaciers of the world's highest mountains, the Himalayas, to the largest bay in the world, the Bay of Bengal. Find out why this river is a lifeline to an array of wild animals, including India's rare one-horned rhinoceros, as well as eight per cent of the world's population. Then travel into a lost world in the remote hills of north-east India, home to head hunting tribes, tiger-infested forests, unclimbed mountains and pristine rivers. Visit India's Thar Desert and discover how this harsh environment supports both humans, and some of the toughest and rarest creatures on Earth.