Sian Lowland

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Sian Lowland or Oversian basin (Ukrainian : Надсіанська котловина) is a lowland located at the border between Poland and Ukraine along the San River. Most of the region is located in Poland except for a small portion in southeastern end which is in Ukraine.

Ukrainian language language member of the East Slavic subgroup of the Slavic languages

Ukrainian is an East Slavic language. It is the official state language of Ukraine and first of two principal languages of Ukrainians; it is one of the three official languages in the unrecognized state of Transnistria, the other two being Romanian and Russian. Written Ukrainian uses a variant of the Cyrillic script.

Poland republic in Central Europe

Poland, officially the Republic of Poland, is a country located in Central Europe. It is divided into 16 administrative subdivisions, covering an area of 312,696 square kilometres (120,733 sq mi), and has a largely temperate seasonal climate. With a population of approximately 38.5 million people, Poland is the sixth most populous member state of the European Union. Poland's capital and largest metropolis is Warsaw. Other major cities include Kraków, Łódź, Wrocław, Poznań, Gdańsk, and Szczecin.

Ukraine sovereign state in Eastern Europe

Ukraine, sometimes called the Ukraine, is a country in Eastern Europe. Excluding Crimea, Ukraine has a population of about 42.5 million, making it the 32nd most populous country in the world. Its capital and largest city is Kiev. Ukrainian is the official language and its alphabet is Cyrillic. The dominant religions in the country are Eastern Orthodoxy and Greek Catholicism. Ukraine is currently in a territorial dispute with Russia over the Crimean Peninsula, which Russia annexed in 2014. Including Crimea, Ukraine has an area of 603,628 km2 (233,062 sq mi), making it the largest country entirely within Europe and the 46th largest country in the world.

The lowland is located between Malopolska Upland, Carpathian Foothills, Opillia Upland and Roztochia. To the southeast it extends into Dniester Lowland over the San-Dniester Divide.

The Sian Lowland is a tectonic depression along the foothills of the Carpathian Mountains filled in by Miocene strata (up to 300 m (980 ft) thick) covered with glacial and alluvial deposits. It consists of elevated plateaus (the tallest being Tarnohorod) dissected by the valleys of rivers, such as the Tanew River, the Liubachivka River, the Shklo River, and the Vyshnia River. Loess can be found in parts of the plateaus, and dunes are situated in some of its sandy reaches.

Carpathian Mountains mountain range in Central and Eastern Europe

The Carpathian Mountains or Carpathians are a mountain range system forming an arc roughly 1,500 km (932 mi) long across Central and Eastern Europe, making them the third-longest mountain range in Europe after the Ural Mountains with 2,500 km (1,553 mi) and Scandinavian Mountains with 1,700 km (1,056 mi).

The Miocene is the first geological epoch of the Neogene Period and extends from about 23.03 to 5.333 million years ago (Ma). The Miocene was named by Charles Lyell; its name comes from the Greek words μείων and καινός and means "less recent" because it has 18% fewer modern sea invertebrates than the Pliocene. The Miocene is preceded by the Oligocene and is followed by the Pliocene.

Loess A predominantly silt-sized clastic sediment of accumulated wind-blown dust

Loess is a clastic, predominantly silt-sized sediment that is formed by the accumulation of wind-blown dust. 10% of the Earth's land area is covered by loess or similar deposits.

A large proportion of the lowland's forests have been cleared out, although pine forests mixed with firs and birches occur in the region's sandy areas, and fir forests mixed with hornbeams and maples grow in its heavier soils.

Fir genus of plants

Firs (Abies) are a genus of 48–56 species of evergreen coniferous trees in the family Pinaceae. They are found through much of North and Central America, Europe, Asia, and North Africa, occurring in mountains over most of the range. Firs are most closely related to the genus Cedrus (cedar). Douglas firs are not true firs, being of the genus Pseudotsuga.

Hornbeam genus of plants

Hornbeams are hardwood trees in the flowering plant genus Carpinus in the birch family Betulaceae. The 30–40 species occur across much of the temperate regions of the Northern Hemisphere.

The lowland has a population density of 80 persons/km2; the population is predominantly (75%) rural.

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