Sapa, Vietnam | O Quy Hau Mountain Pass
The O Quy Ho mountain pass is one of Vietnam's most picturesque and longest mountain passes. The O Quy Hau Mountain is about 15 km from Sapa Town and lies vastly between the earth's and sky's faces, surrounded by clouds. It is also known as the Hoang Lien Son mountain pass since it is located on Highway 4D, which crosses the Hoang Lien Son mountain range.