Being one of the four great peaks in the Northwest, Hoang Lien Son pass is located at an altitude of more than 2000m, nearly 50km long, of which 2/3 of the road belongs to Tam Duong - Lai Chau district, the remaining 1/3 in Sa Pa district - Lao Cai. Hoang Lien Son Pass has been awarded by the Ministry of Culture, Sports and Tourism with the rregistration of a national scenic relic. The winding and challenging pass is intertwined with clouds and mountains around the Hoang Lien mountain range, where Fansipan peak - the roof of Indochina windy on the peak of 3,143m, is located. As a recognized provincial tourist destination, Hoang Lien Son Pass has long been famous not only for its important traffic location but also for its most majestic beauty in the Northwest. Among the "Four Great Peaks" in the Northwest, only Ma Pi Leng Pass (Ha Giang) is located far from Lai Chau. The remaining 3 passes, including Hoang Lien Son pass (Lao Cai - Lai Chau), Pha Din pass (Son La - Dien Bien), Khau Pha pass (Yen Bai), are located on the arterial traffic routes from the provinces. guide to Lai Chau.