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.
Motuo County (English: Medog County), Tibetan: flowers, meaning "flowers". It belongs to Linzhi City, Tibet Autonomous region, and Linzhi City has jurisdiction over the county. It is located in southeastern Tibet, located in the lower reaches of the Brahmaputra River, the eastern part of the Himalayas and the southern slope of the Gangri Gabu Mountains, Chayu County in the east, India in the south (some areas in southern Tibet), Milin County, Longzi County and Cuona County in the west, Bomi County and Bayi County in the north, with a total area of 34000 square kilometers (12000 square kilometers actually controlled by China). In 2016, Motuo County had jurisdiction over 1 town, 7 townships (including 1 ethnic township), 46 administrative villages and 60 villages. In 2016, the total population of the county was 14040. In 2016, the GDP of the whole county was about 4.74.