The lofty snowcapped Kunlun Mountains are veiled in a wispy mist as the train climbs up a steep mountain pass, trudging toward Lhasa. Through the window, great expanses of the Qinghai-Tibet Plateau roll into view: grasslands dotted with black yaks and prayer flags fluttering from gold-topped temples. This is definitely the 'roof of the world'.
For centuries, Tibet was cut off from the outside world by its remote location, extreme climate and geographic environment. This far-flung region thwarted all but the boldest travellers and explorers â that is, until the construction of the Qinghai-Tibet Railway in 2006, which connected Tibet to the rest of China.