Jiayu Pass, lying to the west of Jiuquan, is the western starting point of the existing Great Wall of China. The pass was a significant defense system to keep away enemies coming from west, and an indispensable stopping station of the ancient Silk Road. The Silk Road is now considered a climate hot spot, like the poles, where climate change is accelerating faster than in other areas.
© Greenpeace / John Novis