An ancient caravan route linking China with the West, used from Roman times onwards and taking its name from the silk that was a major Chinese export. By this route Christianity and (from India) Buddhism reached China. A ‘North Road’ skirted the northern edge of the Taklimakan Desert before heading westwards into Turkestan (and thence to the Levant), while a ‘South Road’ followed a more southerly route through the high passes of the Kunlun and Pamir mountains into India. A railway (completed in 1963) follows the northern route from Xian to Urumchi and into Kazakhstan.