• Height: 2720 m (  8,924 feet )
• Location: In the border between Laos (Xiengkhoang Province) and Vietnam (Nghe An Province)

• Features:

– One of the ultra-prominent peaks in Southeast Asia (higher than surrounding 1500 meters)
– Suitable for adventurer and person who get used to with craggy area.
– You should take advantage of your journey in Indochina from Vietnam is a visit to this area

Phu Xai Lai Leng appears like a bulky majestic wall. Over the landmark 422, on the other side is Xieng Khouang Province, Laos, at the foot of Phu Xai Lai Leng on Vietnam territory is Na Ngoi commune with more than 5,000 people, H'mong people account for 80%. Phu Xai Lai Leng in the H'mong language means "seen everywhere" referring to the lofty height of the mountain.

Phu Xai Lai Leng is also the station of the military border forces. To discover the high peak, people have to register at the Na Ngoi border station, the officers, border guards here who are willing to help. This border region is characterized by subregion climate, midday is burning hot, afternoon thunderstorms and lightning, evening is freezing cold.

Explore Phu Xai Lai Leng is not simply climb a high mountain but also learn the cultural life of local residents. At the foot of Phu Xai Lai Leng is 17 H'mong villages, in which Buoc Mu is typical with an ancient history of over hundred years.