Ngamba La is a high mountain pass at an elevation of 4.583m (15,036ft) above the sea level, located on the border between Sichuan and Qinghai provinces, in China.
The road to the summit is totally paved. It’s called 217 Provincial Road (S217). The road is long and arduous and crosses several mountain passes through remote areas, so you need to be prepared. Coming from the east is a very slow climb but on the west side there are some steeper switchbacks.
The road is 315km (195 miles) long, running from Xiewuzhen (in Chindu County) to Manigangezhen (in Dêgê County). The pass is also known as Anba La. The road is terrible, with a notorius lack of oxygen that tests the organisms and a high degree of steepness. Classical nomads country all around. The zone is prone to heavy mist and can be dangerous in low visibility conditions. Do not travel this road in severe weather conditions.
Pic: Jaap Vinke