Ma Pi Leng Pass is a mountain pass which belongs to Ha Giang Province. This pass is well known for its dangerous but wonderful 20-kilometer road at the altitude of over 1500m over the sea level. Over the pass, there is a path called “Happiness Road”, which connects Ha Giang, Dong Van, and Meo Vac, was constructed from the 1960s by the workers who almost are the H’Mong people. Ma Pi Leng Pass is truly a cannot-be-denied attraction in a Ha Giang travel.