The Colchis Lowland ( ka, კოლხეთის დაბლობი, ) is a geographical area in

Georgia Georgia most commonly refers to: * Georgia (country), a country in the Caucasus region of Eurasia * Georgia (U.S. state), a state in the Southeast United States Georgia may also refer to: Places Historical states and entities * Related to the ...

, which consists of a coastal lowland plain of the eastern

Black Sea The Black Sea is a marginal mediterranean sea of the Atlantic Ocean lying between Europe and Asia, east of the Balkans, south of the East European Plain, west of the Caucasus, and north of Anatolia. It is bounded by Bulgaria, Georgia, Roma ...

. Named after

Colchis In Greco-Roman geography, Colchis (; ) was an exonym for the Georgian polity of Egrisi ( ka, ეგრისი) located on the coast of the Black Sea, centered in present-day western Georgia (country), Georgia. Its population, the Colchians a ...

, an

ancient Greek Ancient Greek includes the forms of the Greek language used in ancient Greece and the ancient world from around 1500 BC to 300 BC. It is often roughly divided into the following periods: Mycenaean Greek (), Dark Ages (), the Archaic peri ...

name for this region, the lowland is nearly triangular, squeezed between the

Greater Caucasus The Greater Caucasus ( az, Böyük Qafqaz, Бөјүк Гафгаз, بيوک قافقاز; ka, დიდი კავკასიონი, ''Didi K’avk’asioni''; russian: Большой Кавказ, ''Bolshoy Kavkaz'', sometimes translat ...

and

Lesser Caucasus The Lesser Caucasus, also called Caucasus Minor, is the second of the two main mountain ranges of Caucasus mountains, of length about . The western portion of the Lesser Caucasus overlaps and converges with east Turkey and northwest Iran. It runs ...

mountains, with its base leaning on the Black Sea and apex directed to the east, reaching the environs of the town of

Zestaponi Zestafoni or Zestaponi ( ka, ზესტაფონი, tr, ) is the administrative center of Zestafoni District in Western Georgia. Zestafoni is the center of an ancient, historical part of Georgia – Margveti, which is a part of Imereti ...

. To the northwest and southwest, respectively, the plain continues as narrow coastal strips in

Abkhazia Abkhazia, ka, აფხაზეთი, tr, , xmf, აბჟუა, abzhua, or ( or ), officially the Republic of Abkhazia, is a partially recognised state in the South Caucasus, recognised by most countries as part of Georgia, which vi ...

and

Adjara Adjara ( ka, აჭარა ''Ach’ara'' ) or Achara, officially known as the Autonomous Republic of Adjara ( ka, აჭარის ავტონომიური რესპუბლიკა ''Ach’aris Avt’onomiuri Resp’ublik’a'' ...

. The Colchis Lowland is formed by the combined

alluvial plains An alluvial plain is a largely flat landform created by the deposition of sediment over a long period of time by one or more rivers coming from highland regions, from which alluvial soil forms. A floodplain is part of the process, being the smal ...

of the

Rioni The Rioni ( ka, რიონი, ; , ) is the main river of western Georgia. It originates in the Caucasus Mountains, in the region of Racha and flows west to the Black Sea, entering it north of the city of Poti (near ancient Phasis). The city ...

Inguri The Enguri ( ka, ენგური, tr, xmf, ინგირი, ingiri, ab, Егры, ''Egry'' russian: Ингури, ''Inguri'') is a river in western Georgia. It is long, and has a drainage basin of .Khobi Khobi ( ka, ხობი) is a town in western Georgia with a population of 4,242. The settlement of Khobi acquired the status of a town in 1981 and currently functions as an administrative center of the Khobi District within the Samegrelo-Zem ...

Supsa Supsa ( ka, სუფსა) is a Black Sea port village in western Georgia (country), Georgia with the population of 273 (2014). It is located in the Lanchkhuti Municipality, on the river Supsa (river), Supsa. It is the terminus of the Baku-S ...

, Chorokhi, and other rivers, which have sources in the Greater and Lesser Caucasus ranges. The lowland has an average elevation of 100 to 150 m, but some places are located below sea level. It is located in a damp

subtropical climate The subtropical zones or subtropics are geographical and climate zones to the north and south of the tropics. Geographically part of the temperate zones of both hemispheres, they cover the middle latitudes from to approximately 35° north and ...

zone, with an

annual precipitation In meteorology, precipitation is any product of the condensation of atmospheric water vapor that falls under gravitational pull from clouds. The main forms of precipitation include drizzle, rain, sleet, snow, ice pellets, graupel and hai ...

of about 1,500 mm. The surface of the lowland was formed in

Late Pleistocene The Late Pleistocene is an unofficial Age (geology), age in the international geologic timescale in chronostratigraphy, also known as Upper Pleistocene from a Stratigraphy, stratigraphic perspective. It is intended to be the fourth division of ...

and

Holocene The Holocene ( ) is the current geological epoch. It began approximately 11,650 cal years Before Present (), after the Last Glacial Period, which concluded with the Holocene glacial retreat. The Holocene and the preceding Pleistocene togethe ...

. It has significantly been modified by human activity. The region's subtropical conditions have supported agriculture since ancient times; citrus fruits, tea, and tung are grown, mostly on the surrounding foothills. The wetter lowlands in the centre of the plain collect cold air, and frosts preclude the cultivation of more sensitive crops. Parts of the Colchis Lowland are included in a series of national parks and protected areas. Because of the region's biodiversity and range of ecosystems (including deciduous rainforests and wetlands, percolation bogs, and other mire types), part of the Colchis Lowland were inscribed on the

UNESCO The United Nations Educational, Scientific and Cultural Organization is a specialized agency of the United Nations (UN) aimed at promoting world peace and security through international cooperation in education, arts, sciences and culture. It ...

World Heritage List A World Heritage Site is a landmark or area with legal protection by an international convention administered by the UNESCO, United Nations Educational, Scientific and Cultural Organization (UNESCO). World Heritage Sites are designated by UNES ...

in 2021, as the

Colchic Rainforests and Wetlands The Colchic Rainforests and Wetlands is a UNESCO World Heritage Site in Georgia, which comprises parts of the Colchis Lowland along some 80 km of western Georgia's Black Sea coastline. It was inscribed by UNESCO on 26 July 2021, becoming the first ...

site.

References

{{coord missing, Georgia (country) Plains of Georgia (country)