A farmer of Tibetan ethnic group drives yaks on the mountainous area of Amne Machin peak in Maqen County of Golog Tibetan Autonomous Prefecture, northwest China's Qinghai Province, June 26, 2014. The entire Amne Machin range is about 28 kilometers long and 10 meters wide with its elevation estimated to 6,282 meters. (Xinhua/Guo Qiuda)
A woman of Tibetan ethnic group stands in front of her tent on the mountainous area of Amne Machin peak in Maqen County of Golog Tibetan Autonomous Prefecture, northwest China's Qinghai Province, June 26, 2014. The entire Amne Machin range is about 28 kilometers long and 10 meters wide with its elevation estimated to 6,282 meters. (Xinhua/Guo Qiuda)
Expedition members have a rest at a camp on the mountainous area of Amne Machin peak in Maqen County of Golog Tibetan Autonomous Prefecture, northwest China's Qinghai Province, June 24, 2014. The entire Amne Machin range is about 28 kilometers long and 10 meters wide with its elevation estimated to 6,282 meters. (Xinhua/Guo Qiuda)