• Mesa
  • Dongning

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.

Dongning City is a county-level city directly under the jurisdiction of Heilongjiang Province and managed by Mudanjiang City. Dongning City is located in the southeast of Heilongjiang Province, bordering Russia in the east and adjacent to Wangqing County, Yanbian Korean Autonomous Prefecture and Hunchun City, Yanbian Korean Autonomous Prefecture in the south. Dongning City is located in the southeast of Heilongjiang Province with longitude of 129 °53 miles east longitude and 43 °25 degrees north latitude. It is an important transportation hub on the international corridor of Northeast Asia. It is a national first-class land port. Dongning was established at the end of the Qing Dynasty, and in December 2015, Dongning withdrew its county and set up a city. Dongning City has a total area of 7139 square kilometers, with a geomorphology of "nine mountains, half water and half land". It has jurisdiction over six towns with a population of 210000 (2014). The climatic condition is temperate continental monsoon climate. 2014, Dongning
Airport In Dongning - Mudanjiang Hailang International Airport
Mudanjiang Hailang International Airport (Mudanjiang Hailang International Airport, IATA: MDG, ICAO: ZYMD), located in the southwest suburb of Mudanjiang City, Heilongjiang Province, China, 9 kilometers away from the center of Mudanjiang, is a 4C-level military-civilian joint international feeder airport and one of the country's opening-up class air port   .
On September 2, 1985, Mudanjiang Hailang Airport was officially open to navigation; in December 1998, Mudanjiang Hailang Airport was officially opened to the public with the approval of the State Council; on August 21, 2017, Mudanjiang Hailang Airport was officially renamed as Mudanjiang Hailang International Airport   .
As of February 2020, the terminal area of ​​Mudanjiang Hailang International Airport is 8,200 square meters, with 2 boarding gates; the area of ​​the civil aviation station is 38,000 square meters, with 4 seats; one is 2,600 meters long and 45 meters wide The asphalt runway can take off and land Boeing B737-800 and below; it can meet the needs of annual passenger throughput of 500,000 passengers   .
In 2019, Mudanjiang Hailang International Airport handled a total of 1,048,088 passengers, a year-on-year increase of 12.2%, ranking 103rd in the country; cargo and mail throughput was 1,290.0 tons, a year-on-year increase of 4.3%, ranking 112th in the country; aircraft took off and landed 8,128 sorties , a year-on-year increase of 8.9%, ranking 139th in the country   .
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