A mesa is an isolated, flat-topped elevation, ridge or hill, which is bounded from all sides by steep escarpments and stands distinctly above a surrounding plain. Mesas characteristically consist of flat-lying soft sedimentary rocks capped by a more resistant layer or layers of harder rock, e.g. shales overlain by sandstones. The resistant layer acts as a caprock that forms the flat summit of a mesa. The caprock can consist of either sedimentary rocks such as sandstone and limestone; dissected lava flows; or a deeply eroded duricrust. Unlike plateau, whose usage does not imply horizontal layers of bedrock, e.g. Tibetan Plateau, the term mesa applies exclusively to the landforms built of flat-lying strata. Instead, flat-topped plateaus are specifically known as tablelands.
Qinglong County, which belongs to the Buyi and Miao Autonomous Prefecture in the southwest of Guizhou Province, is located in the southwest and northeast corner of Guizhou Province. It is located in the middle part of the Yunnan-Guizhou Plateau and the middle connection zone of Bishuixing economic circle. East and Guanling County across the river, the north and Shuicheng, Liuzhi Special Zone delimited the river as the boundary. The total area is 1309.8 square kilometers. Qinglong County has the famous "Stilwell Highway-24 turning", Sanwangping grassland, a provincial scenic spot known as "Alpine grassland", and green ecological scenic spots such as Guangzhao Lake Reservoir area, Qinglong Mountain grassland, 10,000 mu citrus field, 10,000 mu tea garden, etc., as well as Panjiang Cliff Inscriptions Group, ancient tombs, flying stones, Mo busy Pavilion and other historical and cultural sites of the Ming and Qing dynasties, as well as Panjiang Iron Cable Bridge and other cultural sites. In 2018, Qinglong County has jurisdiction over 2 streets, 8 towns and 4