The Darbuk-Shyok-DBO Road traverses the historic winter route, also called the Zamistānee route, used by the trading caravans between Leh and Yarkand. Whereas the summer route would cross the Ladakh Range through the difficult Sasser Pass to reach the Shyok River valley, the winter route used to go via the banks of the Shyok River when the water flow would be much reduced and the frozen river surface could be crossed on foot as needed.