Khanbogd Soum, Mongolia A photographer casts his shadow near a coal truck which flipped over near the border with China in the Gobi desert. Reaching the border can be a harrowing ordeal, as vehicles speed towards China and back down the one-lane road. With no street lamps to guide the way and drink-driving a constant problem, danger levels increase at night, drivers say.

Photograph: Rentsendorj Bazarsukh/Reuters