Ma Pi Leng Pass (Ha Giang) – Source: https://vietnamtourism.gov.vn/

Ma Pi Leng is known as “The most majestic pass”. This is the most difficult and heroic section of the Happiness Road; the most dangerous pass in the Global Geopark – Dong Van Stone Plateau. On November 16, 2009, Ma Pi Leng was ranked as a national scenic relic by the Ministry of Culture, Sports and Tourism.