Ma Pi Leng Pass of Ha Giang province is road passes and dangerous over long about 20 km pass across on the Ma Pi Leng peak, has elevation of about 1,200 m of Dong Van Plateau. Ma Pi Leng located on the street named Happiness road connects the city of Ha Giang, Dong Van and Meo Vac town. Ma Pi Leng is called by tourist unorthodox way is one of the "Big Four Pass" in the Northern mountainous region of Vietnam, besides O Quy Ho Pass, Khau Pha Pass and Pha Din Pass.