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.
Danfeng County, under the jurisdiction of Shangluo City, Shaanxi Province, is located in the southeast of Shaanxi Province, at the southern foot of the eastern section of Qinling Mountains. It is named after the belts of Danjiang River and Fengguan Mountain, which belongs to Shangluo City. The terrain is higher in the northwest and lower in the southeast, and the river valleys alternate with each other, showing a "palm"-shaped landform, which is a "nine-mountain, half-water and half-divided field" soil and stone mountain county. The county's forest coverage rate is 70%, which is the "back garden" of Xi'an, the capital of Shaanxi Province. Is the famous reformer Shang Yang Fengdi, Sihao seclusion, the hometown of the famous contemporary writer Jia Pingwa. On September 25, 2018, he won the honorary title of "2018 e-commerce into rural comprehensive demonstration county" of the Ministry of Commerce. In March 2019, it was on the list of the first batch of revolutionary cultural relics protection and utilization districts and counties.