Xuebuda La: Driving the High-Altitude Paved S202 Road in Tibet
Xuebuda La is a high mountain pass located in Qusum County, within the Tibet Autonomous Region of China. Reaching an elevation of 5,119 meters (16,794 ft) above sea level, the paved pass marks the highest point on the mountain route between Shannan and Cona.
| Road facts: Xuebuda La | |
|---|---|
| Location | Qusum County, Shannan, Tibet (China) |
| Elevation | 5,119 m (16,794 ft) |
| Route | S202 Road |
| Surface | Paved asphalt |
| Max Gradient | Sustained steep mountain ramps |
Where is the high-altitude pass of Xuebuda La located?
The mountain pass is situated in the southern sector of Tibet, cutting across the heavy ridges that divide Shannan from the border area of Cona. The pass, also locally known as Shobo La, sits on the paved S202 Road, running directly south of the high mountain sweeps of Yarto Drak La. The route runs along deep alpine lakes and stark rock faces covered in snow, completely cut off from major urban service stations.
Why do engines and brakes struggle on the Xuebuda La climb?
While the road surface is fully paved with black asphalt and marked with yellow center lines, the altitude is the main problem. At 5,119 meters high, the lack of oxygen starves vehicle engines, causing a massive drop in engine torque and acceleration that leaves trucks lagging on the climbs. Drivers face severe risks of acute mountain sickness and hypoxia. The descent toward the south cuts through sharp mountain drops with steep declines where heavy trucks must rely strictly on low gears to prevent the brakes from overheating and failing on the long tarmac slopes.
How does winter weather affect the S202 road over Xuebuda La?
The pass is exposed to extreme weather shifts year-round due to its high elevation. Heavy winter blizzards and mountain snowstorms regularly dump thick drifts across the asphalt, forcing local authorities to shut down the gates and close the route for days. Even during the summer months, sudden freezing storms drop temperatures below zero in minutes, turning the rainwater on the paved lanes into a sheet of slick black ice that causes tires to spin out on the sharp switchbacks.
Road suggested by: Hugh Wilson
Pic: 全珍珠