Southern Xinjiang is a deep cul-de-sac of mountains and basins, and for most of history the way out to the west was over the passes into Central Asia. Two of those crossings are still in use towards Kyrgyzstan: one to the north-west of Kashgar, and one further south and west, both of them above three thousand metres at the frontier and reached by long roads through country that has almost no settlement.
The country on the way
The drive leaves the irrigated oasis around Kashgar and climbs steadily into dry hills, then into genuine mountains. The landscape is bare: ochre and grey rock, gravel fans, river beds that are mostly dry, and patches of green only where a glacier stream makes irrigation possible. There are Kyrgyz and Tajik herders in the high valleys, with yurts and flocks of sheep and goats, and small settlements with one shop and a teahouse. Snow lies on the high ground for much of the year, and the passes can be closed by weather even in summer.
Border formalities
These are working international crossings, not scenic overlooks. They open on weekdays only, they have fixed hours, and they can close at short notice for weather, roadworks or operational reasons. Travellers must hold the correct visas for both countries and, since the region is a restricted area for foreign visitors, the necessary travel permits arranged in advance through a licensed agency; vehicles and drivers also need authorisation, and the crossing is generally done in a convoy or with a licensed operator rather than independently. Waiting at the frontier for a day because a document is missing is a common experience.
Practical notes
Because of the permits, this is not a journey to improvise; arrange it well in advance through an operator who does it regularly, and build a spare day into your plans on both sides. Altitude, cold, sun and dust are the practical hazards: bring sun protection, warm layers, water and food, since there is nothing to buy for long stretches. The season runs roughly from late spring to early autumn. If you are simply interested in the scenery rather than the crossing, the road south towards the Pamir plateau and the Karakoram highway gives you the same landscapes without the border paperwork.
