X120 is a high mountain road located in northwestern Sichuan province, in China. The road is very steep, with hundreds of hairpin turns.
The road, also known as Pingsong road, is asphalted. Do not travel this road in severe weather conditions. Avalanches, heavy snowfalls and landslides can occur anytime, being extremely dangerous due to frequent patches of ice. It links Chuanzhusizhen and the Pignan Highway. It’s 150km long. Its highest point is at 4.016m (13,175ft) above the sea level. With such a high summit altitude the road can be closed anytime due to snowfalls. The zone is prone to heavy mist and can be dangerous in low visibility conditions. The climb is simply terrible, with a notorius lack of oxygen that tests the organisms and a high degree of steepness. Most people feel altitude sickness at around 2,500-2,800 meters.