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.
Fenggang County, under the jurisdiction of Zunyi City, Guizhou Province, is located in the northeast of Guizhou, bordered by Sinan, Meitan, Wuchuan and other seven counties, bordering Dalou Mountain in the north and Wujiang River in the south. It always belongs to the Qiuyuan area of central Guizhou, with no cold in summer, no cold in winter, abundant rainfall and rich heat; the total area is 1885.09 square kilometers, with 13 towns and 1 township under the jurisdiction of 13 towns and 1 township with a total population of 448143 in 2018. Fenggang, which was founded in the 29 year of Ming Wanli (1601), is the eastern gate of Zunyi, the old revolutionary base. It is located at the southern foot of Dalou Mountain and the north bank of Wujiang River. The natural and cultural landscapes in the county include the fossilized terrestrial plants Qianyuzhi, the "Ancient military Cave Castle" of the Manao Mountain, the "Yelang Gudian" of the Cliff Inscriptions in the Ming Dynasty, and the "Wanguhui you" of the Zhonghua Mountain. There are Ci Forest Park in western China, Jiudaogui long River, Wanfo Canyon and folk Nuo opera.