Book excerpt: Iain Campbell has been fascinated by mountains for as long as he can remember. In his new book, he tells the story of a journey following the course of the Indus River from its mouth in the mudflats of Karachi through the Karakorum, Kashmir and the Himalayas to its source in Ladakh on the Indian side of the Tibetan plateau, where it springs from the 'Lion's Mouth' on Mount Kailash. His narrative paints an insightful, honest and heartfelt portrait of Pakistan, a country that through all his wanderings of the deserts and mountains of Asia kept drawing him back, and a place which combines a rich religious heritage with some of the most spectacular mountains in the world. Engrossing and eye-opening, Iain Campbell's account of his travels through this mesmerising land will appeal to travellers, mountaineers, trekkers, wilderness enthusiasts, anyone interested in the culture and history of the subcontinent, and fans of quality travel writing.