Kunlun Mountains, 'Forefather of All Mountains' (6/6)

Photo taken on September 5, 2013 shows the scenery of Kunlun Mountains, one of the longest mountain chains in Asia. Extending about 2,500 km and with an average elevation of 5,000 meters, the Kunlun Mountain range has been known as the "forefather of all mountains" since the ancient times. [Photo: CNS / Hu Youjun]