The Sundrun () is a river in the

Sakha Republic Sakha, officially the Republic of Sakha (Yakutia), is a republics of Russia, republic of Russia, and the largest federal subject of Russia by area. It is located in the Russian Far East, along the Arctic Ocean, with a population of one million ...

(Yakutia) of the

Russian Federation Russia, or the Russian Federation, is a country spanning Eastern Europe and North Asia. It is the list of countries and dependencies by area, largest country in the world, and extends across Time in Russia, eleven time zones, sharing Borders ...

. It is long, and has a

drainage basin A drainage basin is an area of land in which all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water, such as a lake or ocean. A basin is separated from adjacent basins by a perimeter, ...

of .

Course

It has its sources in the

Ulakhan-Sis Range The Ulakhan-Sis Range (; ) is a mountain range in the Sakha Republic, Far Eastern Federal District, Russia.

and flows roughly northeastwards across the

Kondakov Plateau The Kondakov Plateau (; ) is a mountain plateau in the Sakha Republic, Far Eastern Federal District, Russia. The town of Chokurdakh is located on the other bank of the Indigirka, facing the plateau. The nearest airport is Chokurdakh Airport. Th ...

.Topographic map - Chokurdakh
/ref> Leaving the uplands, it crosses the

Yana-Indigirka Lowland The Yana-Indigirka Lowland (; ) is a large, low alluvial plain located in northern Siberia, Far Eastern Federal District, Russia. Administratively most of the territory of the lowland is part of the Sakha Republic (Yakutia). There are inhabited ...

tundra, part of the greater

East Siberian Lowland The East Siberian Lowland (), also known as Yana-Kolyma Lowland (),Oleg Leonidovič Kryžanovskij, ''A Checklist of the Ground-beetles of Russia and Adjacent Lands.'' p. 16 is a vast plain in North-eastern Siberia, Russia.East Siberian Sea The East Siberian Sea (; ) is a marginal sea in the Arctic Ocean. It is located between the Arctic Cape to the north, the coast of Siberia to the south, the New Siberian Islands to the west and Cape Billings, close to Chukchi Peninsula, Chukotka, ...

at the western end of the

Kolyma Bay The Kolyma Bay (; Kolymskaya Guba) is one of the main gulfs of the East Siberian Sea. The bay gets its name from the Kolyma Lowlands, whose coastline forms the whole eastern half of this bay. The Kolyma Lowlands are dotted with numerous lakes an ...

Google Earth Google Earth is a web mapping, web and computer program created by Google that renders a 3D computer graphics, 3D representation of Earth based primarily on satellite imagery. The program maps the Earth by superimposition, superimposing satelli ...

The Sundrun River freezes up in early October and remains icebound until June.

Tributaries

The main tributary of the Sundrun is the long Maly Khomus-Yuryakh (Малый Хомус-Юрях) from the right.

Khroma-Sundrun Interfluvial Area

The Kytalyk Wetlands, located between the Sundrun and the

Khroma The Khroma () is a river in the Sakha Republic (Yakutia) of the Russian Federation. It is long, and has a drainage basin of . Course The source of the Khroma is at the confluence of the Tamteken and the Nemalak-Arangas, flowing down from the Pol ...

, are an ecologically important area, providing a favorable habitat for many rare animals. It is practically uninhabited and full of lakes and marshes.

Siberian crane The Siberian crane (''Leucogeranus leucogeranus''), also known as the Siberian white crane or the snow crane, is a bird of the family Gruidae, the crane (bird), cranes. They are distinctive among the cranes: adults are nearly all White, snowy whi ...

s are abundant in the Sundrun River wetlands. The

lesser white-fronted goose The lesser white-fronted goose (''Anser erythropus'') is a goose closely related to the larger greater white-fronted goose (''A. albifrons''). It breeds in the northernmost Palearctic, but it is a scarce breeder in Europe, with a reintroduction ...

Brent goose The brant or brent goose (''Branta bernicla'') is a small goose of the genus ''Branta''. There are three subspecies, all of which winter along temperate-zone sea-coasts and breed on the high-Arctic tundra. The Brent oilfield was named after ...

Bewick's swan The tundra swan (''Cygnus columbianus'') is a small swan of the Holarctic. The two taxa within it are usually regarded as conspecific, but are also sometimes split into two species: Bewick's swan (''Cygnus bewickii'') of the Palaearctic and the ...

and the

spectacled eider The spectacled eider (pronounced ) (''Somateria fischeri'') is a large sea duck that breeds on the coasts of Alaska and northeastern Siberia. The spectacled eider is slightly smaller than the common eider at in length. The male is unmistakable ...

are also found in the Khroma-Sundrun Interfluvial Area. There is also a wild

reindeer The reindeer or caribou (''Rangifer tarandus'') is a species of deer with circumpolar distribution, native to Arctic, subarctic, tundra, taiga, boreal, and mountainous regions of Northern Europe, Siberia, and North America. It is the only re ...

population in the Sundrun basin.

Sundrun Kekurs

The "Sundrun Kekurs" (Сундрунские кекуры) are the natural

kigilyakh Kigilyakh or kisiliyakh (; , plural ''kihilēxlere'') are pillar-like natural rock formations looking like tall monoliths standing more or less isolated. Usually they are composed of granite or sandstone shaped as a result of cryogenic weathe ...

-type

rock formation A rock formation is an isolated, scenic, or spectacular surface rock (geology), rock outcrop. Rock formations are usually the result of weathering and erosion sculpting the existing rock. The term ''rock Geological formation, formation ...

s of the

Ulakhan-Sis Range The Ulakhan-Sis Range (; ) is a mountain range in the Sakha Republic, Far Eastern Federal District, Russia.

and

Suor Uyata The Suor Uyata (; ) is a mountain range in the Sakha Republic, Far Eastern Federal District, Russia. The village of Andryushkino, a small inhabited locality of the Lower Kolyma District, is located to the SSE.Google Earth Kigilyakhs, rock fo ...

, located in the upper course of the river. Сундрунские кекуры
/ref>

References

External links