Ma Pi Leng Pass belongs to Ha Giang province; it is dangerous road with 20 kilometers length. Over the Ma Pi Leng, there has a mountain with 2.000 meters height located on the 'Happiness' road connecting Ha Giang, Dong Van and Meo Vac town. Ma Pi Leng began building from the 60s of the 20th century by workers who almost are the H'mong.

The path length is approximately 200 kilometers. Ma Pi Leng Pass is located in the Dong Van Geoparks which is recognized as the global geoparks. The road along the mountainside has romantic, spectacular scenery that is ideal destination for tourists.

Ma Pi Leng Pass is not long but it is the most dangerous pass in the northern border mountain area. It is considered as the “King” of the Vietnam’s pass or Great Wall of Vietnam or the Pyramid of the Meo. At the top of Ma Pi Leng mount is the “happiness” road, there has a stone stele recording the marks in the construction process.

November 16th 2009, Ministry of Culture, Sport and tourism of Vietnam has decided to classify Ma Pi Leng area as scenic relic of country. It includes: Ma Pi Leng pass is considered the unique regional heritage about landscape and geomorphology; pass peak area is considered as one of the most beautiful viewpoint to enjoy the panoramic in Vietnam; alley Nho Que River is one of the most unique tectonic valley in Vietnam. There have many writers, poets visiting the grandeur pass such as Xuan Dieu, Nguyen Ngoc… and the impression inspires in their compositions.

Scenery in Ma Pi Leng pass is unique with majestic and wild beauty. Looking to the north and northeast, thousands of gray mountains concatenate to the horizon. Net to the road is abyss, below is the Nho Que River with cool water