O Quy Ho pass is a deserted high mountain pass at an elevation of 2,000 meters above the sea level located in Lao Cai Province, in the northwestern Vietnam.
The road to the summit is called QL4D. It’s asphalted and pretty steep. People know the pass as the “cloudy mountain pass” because its top is covered with white clouds almost all year round. The road along the pass is very twisting going through the Hoang Lien mountains.