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.
Dezhou, known as Ande in ancient times, is a prefecture-level city in Shandong Province for short. Located in the northwest of Shandong Province and the alluvial plain of the lower reaches of the Yellow River, it is the northwest gate of Shandong Province, Cangzhou City, Hebei Province to the north, Jinan City and Liaocheng City to the south, Hengshui City, Hebei Province to the west, and Binzhou City to the east. Dezhou City is the alluvial plain of the Yellow River. in history, there have been two great migrations of the Yellow River and thousands of breaches, creating a topography of high in the southwest and low in the northeast. The basic climate is characterized by the significant influence of the monsoon, distinct seasons and a clear boundary between hot and cold, dry and wet; the administrative area covers an area of 10356 square kilometers, with a resident population of 5.7958 million (by the end of 2017), and has jurisdiction over 2 districts, 7 counties and 2 county-level cities. 1566 Dongfeng Dongfeng Road, Decheng District. Dezhou is China Sun City, Chinese functional Sugar City, and excellent Tourism in China.