Take a scenic bus to visit Yadan Devil City. Dunhuang Yadan National Geopark, commonly known as Dunhuang Yadan Devil City. It is an important component of the Dunhuang West Line tourist scenic spot. It is 180 kilometers away from Dunhuang City and is located on the northwest side of Yumenguan. The scenic spot is divided into north and south areas, about 25 kilometers long and 13 kilometers wide from east to west. The park area is 346.34 square kilometers, mainly geological relics formed by wind erosion. In December 2001, the Ministry of Land and Resources approved the establishment of the "Dunhuang Yadan National Geopark in Gansu", and in August 2003 the park was officially opened and opened to visitors. In November 2006, it was rated as an AAAA-level tourist attraction by the National Tourism Administration, and was approved as a science base for land and resources, a science education base in Gansu Province, and a nature reserve for geological relics at the provincial level in Gansu Province. Dunhuang Yadan National Geopark is the location of film and television advertising shooting, and has filmed many film and television advertising works such as "Heroes", "Tianmai Legend", "Haishen". Dunhuang Yadan National Geopark, with its unique desert scenery, geological wonders of different shapes and ancient folklore, attracted countless brave explorers to uncover the mystery of the "Devil City" and explore the mystery of nature.