X603, a wild mountain road in Tibet
X603 (County Road 603) is a high mountain road located in Nyima County, Nagqu, Tibet, in China.
The unpaved road is very challenging running entirely above 4.500 meters above the sea level. 4x4 vehicle required. It’s usually impassable in winters. The road is 60.9 km (37 mile) long. It runs north-south from the village of Nimazhen (on the S301 Provincial Road) to Shenyaxiang. It tops out at Mada La, a mountain pass at 4.949m (16,236ft) above the sea level. The drive offers stunning views of Kongcuo, Zigu, Zhangnai, Gemang and Gangjiao lakes.