Dasht-e Kavir ( fa, دشت كوير, lit=Low Plains in classical Persian, from ''khwar'' (low), and ''dasht'' (plain, flatland)), also known as Kavir-e Namak () and the Great Salt Desert, is a large desert lying in the middle of the

Iranian Plateau The Iranian plateau or Persian plateau is a geological feature in Western Asia, Central Asia, and South Asia. It comprises part of the Eurasian Plate and is wedged between the Arabian Plate and the Indian Plate; situated between the Zagros ...

. It is about long by wide with a total surface area of about , making it the world's 24th largest desert. The area of this desert stretches from the

Alborz The Alborz ( fa, البرز) range, also spelled as Alburz, Elburz or Elborz, is a mountain range in northern Iran that stretches from the border of Azerbaijan along the western and entire southern coast of the Caspian Sea and finally runs nort ...

mountain range in the north-west to the

Dasht-e Lut The Lut Desert, widely referred to as Dasht-e Lut ( fa, دشت لوت, "Emptiness Plain"), is a large salt desert located in the provinces of Kerman and Sistan and Baluchestan, Iran. It is the world's 33rd-largest desert, and was included on U ...

in the south-east. It is partitioned among the Iranian provinces of Khorasan, Semnan,

Tehran Tehran (; fa, تهران ) is the largest city in Tehran Province and the capital of Iran. With a population of around 9 million in the city and around 16 million in the larger metropolitan area of Greater Tehran, Tehran is the most popul ...

, Isfahan and

Yazd Yazd ( fa, یزد ), formerly also known as Yezd, is the capital of Yazd Province, Iran. The city is located southeast of Isfahan. At the 2016 census, the population was 1,138,533. Since 2017, the historical city of Yazd is recognized as a Wor ...

Features

In the center of the desert lies the Kavir Buzurg (Great Kavir), which is about 320 km long and wide. In the western part of the desert lies the Daryahcheh-e Namak ("salt lake"), . It contains some large salt plates in a mosaic-like shape. It is part of a protected ecological zone, the Kavir National Park. One of the most desolate parts of Dasht-e Kavir is the

Rig-e Jenn The Rig Jenn ( fa, ریگ جن ‘wikt:ریگ, Dune of the Jinn’) is a vast area of sand dunes in the middle of Dasht-e Kavir, Iran's central desert in the border region of the Semnan province, Semnan and Isfahan provinces. It was not travelled ...

(‘ Dune of the

Jinn Jinn ( ar, , ') – also romanized as djinn or anglicized as genies (with the broader meaning of spirit or demon, depending on sources) – are invisible creatures in early pre-Islamic Arabian religious systems and later in Islamic mytho ...

’).

Climate and structure

Dasht-e Kavir's has an arid climate with little precipitation. However, there is usually some rainfall in winter, as well as the mountains that surround it, provide plenty of runoff—enough to create vast seasonal lakes, marshlands and playas. Daytime and nighttime temperatures can vary by as much as over the course of a year. The weather can get quite cold during the nighttime in winter, routinely dropping to below in some areas. Rain usually falls in winter. Usually more elevated areas in Dasht e Kavir have a

cold desert climate The desert climate or arid climate (in the Köppen climate classification ''BWh'' and ''BWk''), is a dry climate sub-type in which there is a severe excess of evaporation over precipitation. The typically bald, rocky, or sandy surfaces in desert ...

(BWk) while less elevated areas have a

hot desert climate The desert climate or arid climate (in the Köppen climate classification ''BWh'' and ''BWk''), is a dry climate sub-type in which there is a severe excess of evaporation over precipitation. The typically bald, rocky, or sandy surfaces in desert ...

(BWh). The desert soil is covered with sand and pebbles; there are

marsh A marsh is a wetland that is dominated by herbaceous rather than woody plant species.Keddy, P.A. 2010. Wetland Ecology: Principles and Conservation (2nd edition). Cambridge University Press, Cambridge, UK. 497 p Marshes can often be found a ...

es, seasonal

lake A lake is an area filled with water, localized in a basin, surrounded by land, and distinct from any river or other outlet that serves to feed or drain the lake. Lakes lie on land and are not part of the ocean, although, like the much large ...

s and seasonal river beds. The high temperatures and low humidity cause extreme vaporization, which leaves the marshes and mud grounds with large crusts of salt. Heavy storms frequently occur and they can cause sand hills reaching up to 40 m in height. Some parts of Dasht-e Kavir have a more steppe-like appearance.

Post-Glacial lake system

Almost 3,000 years ago, at the start of the

post-glacial 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 ...

era, the Kavir was a series of vast lakes: the Asian

monsoon A monsoon () is traditionally a seasonal reversing wind accompanied by corresponding changes in precipitation but is now used to describe seasonal changes in atmospheric circulation and precipitation associated with annual latitudinal osci ...

reached deep into central Iran, bringing heavy summer rain that formed numerous lakes in the closed basins of the central

that today comprises the Kavir and other deserts in the area. There are inscriptions at teppeh

Sialk Tepe Sialk ( fa, تپه سیلک) is a large ancient archeological site (a ''tepe'', "hill, tell") in a suburb of the city of Kashan, Isfahan Province, in central Iran, close to Fin Garden. The culture that inhabited this area has been linked t ...

noting that a local queen had traveled to visit the ruler of a town (identified as Tell-i Bakun, southeast of

) by "sailing the sea". Copious shorelines at various elevations still extant in the Kavir are telltale signs of the post-glacial,

monsoonal A monsoon () is traditionally a seasonal reversing wind accompanied by corresponding changes in precipitation but is now used to describe seasonal changes in atmospheric circulation and precipitation associated with annual latitudinal oscill ...

lakes in central Iran, where desert now dominates.

Wildlife

Vegetation in the Dasht-e Kavir is adapted to the hot and arid climate as well as to the saline soil in which it is rooted. Common plant species like shrubs and

grass Poaceae () or Gramineae () is a large and nearly ubiquitous family of monocotyledonous flowering plants commonly known as grasses. It includes the cereal grasses, bamboos and the grasses of natural grassland and species cultivated in lawns a ...

es can only be found in some valleys and on mountain tops. The most widespread plant is

mugwort Mugwort is a common name for several species of aromatic flowering plants in the genus '' Artemisia.'' In Europe, mugwort most often refers to the species ''Artemisia vulgaris'', or common mugwort. In East Asia the species ''Artemisia argyi'' is ...

. The Persian ground jay is a bird species living in some parts of the desert plateaus, along with Hairy bustards,

lark Larks are passerine birds of the family Alaudidae. Larks have a cosmopolitan distribution with the largest number of species occurring in Africa. Only a single species, the horned lark, occurs in North America, and only Horsfield's bush lark oc ...

s and

sandgrouse Sandgrouse is the common name for Pteroclidae , a family of sixteen species of bird, members of the order Pterocliformes . They are traditionally placed in two genera. The two central Asian species are classified as '' Syrrhaptes'' and the othe ...

. Persian gazelles live in parts of steppe and desert areas of the central plateau. Wild

sheep Sheep or domestic sheep (''Ovis aries'') are domesticated, ruminant mammals typically kept as livestock. Although the term ''sheep'' can apply to other species in the genus '' Ovis'', in everyday usage it almost always refers to domesticated ...

(''Ovis orientalis''), camels,

goat The goat or domestic goat (''Capra hircus'') is a domesticated species of goat-antelope typically kept as livestock. It was domesticated from the wild goat (''C. aegagrus'') of Southwest Asia and Eastern Europe. The goat is a member of the a ...

s (''Capra aegagrus'')Mohammadian, H. Mammals of Iran. Shabpareh Publishing Institute. Tehran, Iran.2005.. and Persian leopards are common in mountainous areas. Night life brings on wild cats,

wolves The wolf (''Canis lupus''; : wolves), also known as the gray wolf or grey wolf, is a large canine native to Eurasia and North America. More than thirty subspecies of ''Canis lupus'' have been recognized, and gray wolves, as popularly un ...

, foxes, and other

carnivore A carnivore , or meat-eater (Latin, ''caro'', genitive ''carnis'', meaning meat or "flesh" and ''vorare'' meaning "to devour"), is an animal or plant whose food and energy requirements derive from animal tissues (mainly muscle, fat and other s ...

s. In some parts of the desert, the

Persian onager The Persian onager (''Equus hemionus onager''), also called the Persian wild ass or Persian zebra, is a subspecies of onager (Asiatic wild ass) native to Iran (Persia). It is listed as Endangered, with no more than 600 individuals left in the wil ...

(''gur'' in Persian) and sometimes even the Asiatic cheetah can be seen. Lizards and

snake Snakes are elongated, limbless, carnivorous reptiles of the suborder Serpentes . Like all other squamates, snakes are ectothermic, amniote vertebrates covered in overlapping scales. Many species of snakes have skulls with several more j ...

s live in different places in the central plateau.

Cultivation

The extreme heat and many storms in Dasht-e Kavir cause extensive erosion, which makes it almost impossible to cultivate the lands. The desert is almost uninhabited and knows little exploitation. Camel and sheep breeding and

agriculture Agriculture or farming is the practice of cultivating plants and livestock. Agriculture was the key development in the rise of sedentary human civilization, whereby farming of domesticated species created food surpluses that enabled people t ...

are the sources of living to the few people living on its soil. Human settlement is restricted to some oases, where wind-blocking housing constructions are raised to deal with the harsh weather conditions. For irrigation, Iranians developed a sophisticated system of water-wells known as ''

qanat A qanat or kārīz is a system for transporting water from an aquifer or water well to the surface, through an underground aqueduct; the system originated approximately 3,000 BC in what is now Iran. The function is essentially the same across ...

s''. These are still in use, and modern globally used water-revenue systems are based on their techniques.

References