The Ulakhan-Sis Range (; ) is a mountain range 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 ...

, Far Eastern Federal District, Russia.Улахан-Сис (Ulakhan-Sis)
/

Great Soviet Encyclopedia The ''Great Soviet Encyclopedia'' (GSE; , ''BSE'') is one of the largest Russian-language encyclopedias, published in the Soviet Union from 1926 to 1990. After 2002, the encyclopedia's data was partially included into the later ''Great Russian Enc ...

; in 35 vols. / Ch. ed. Yu. S. Osipov. 2004—2017. This range is one of the areas of Yakutia where

baydzharakh Baydzharakh (; Yakut: ) is a term based in the Yakut language, referring to a roughly cone-shaped natural rock formation. They are usually composed of siltstone, silty peat or loam. Description Baydzharakhs form owing to thermokarst activity in p ...

s are found.

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 ...

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 are also found on this range.Ykt - Вернулись из Гранитных Городов Улахан Сис
/ref>

History

The Ulakhan-Sis was first mapped in the summer of 1870 by geographer and ethnologist Baron

Gerhard von Maydell Gerhard Gustav Ludwig von Maydell, Baron von Maydell, (; 1 May 1835 in Tartu – 17 August 1894 in Koblenz, Germany) was a Russian explorer, cartographer and ethnologist of Estonian descent. He is known for his pioneering research in the Russian F ...

(1835–1894) during his pioneering research of East Siberia.Siberian History - МАЙДЕЛЬ Гергард Людвигович
/ref> Kular is an abandoned settlement that was located in the range area.

Geography

The Ulakhan-Sis Range rises in the southeastern limits of 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 ...

, northwest and west of the

Kolyma Lowland The Kolyma Lowland () is a lowland plain in the northeastern parts of Sakha Republic in the basin of the Alazeya, Bolshaya Chukoch'ya and lower reaches of the Kolyma rivers. The lowland is formed by fluvio-lacustrine loam soil about 120 m thick ...

and northeast of the

Aby Lowland The Aby Lowland (; ) is a low alluvial plain located in the Sakha Republic, Far Eastern Federal District, Russia. Administratively most of the territory of the lowland is part of Aby District ''(Aby Ulus)''. Geography The lowland is crossed by ...

, along the interfluve of the Erna and Shandrin rivers in the northwest,

Shangina The Shangina (; , ''Şangin'') is a river in Yakutia (Sakha Republic), Russia. It has a length of and a drainage basin of . It is a right tributary of the Indigirka, flowing across the Middle Kolyma District, Middle Kolyma and Aby District, Aby d ...

in the south, and Khatysty and

Arga-Yuryakh The Arga-Yuryakh (; , ''Arğaa Ürex'') is a river in Sakha Republic (Yakutia), Russia. It is one of the major tributaries of the Omoloy. The river has a length of and a drainage basin area of . The river flows north of the Arctic Circle, acro ...

in the southeast. The main ridge stretches in a roughly east/west direction from the western end of the smaller

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 ...

(Суор-Уята) to the east and the headwaters of the Sundrun River to the

Indigirka The Indigirka (; ) is a river in the Sakha Republic in Russia between the Yana to the west and the Kolyma to the east. It is long. The area of its basin is . History The isolated village of Russkoye Ustye, located on the delta of the Indigi ...

for about .

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 highest peak is high Vilka. To the north rises 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 ...

, a lower and wider extension of the range. In the west, the

Polousny Range The Polousny Range (; ) is a mountain range in the Sakha Republic, Far Eastern Federal District, Russia.Полоусный кряж (Polousny Range) / Great Soviet Encyclopedia; in 35 vols. / Ch. ed. Yu. S. Osipov. 2004—2017. This range is one ...

, a prolongation of the range on the other side of the Indigirka River, stretches further westwards. To the south, at a certain distance, rises the

Alazeya Plateau The Alazeya Plateau () is a mountain plateau in the Sakha Republic, Far Eastern Federal District, Russia. The area is named after river Alazeya, which has its source in the plateau. There are kigilyakhs in the Alazeya Plateau. The particularit ...

. Rivers

Bolshaya Ercha The Bolshaya Ercha () is a river in the Sakha Republic (Yakutia), Russia. It is a tributary of the Indigirka. The river has a length of and a drainage basin area of . The river flows north of the Arctic Circle, across desolate territories of the ...

, a tributary of the Indigirka, and

, of the

Alazeya The Alazeya (; ) is a river in the northeastern part of Yakutia, Russia which flows into the Arctic between the basins of the larger Indigirka to the west and the Kolyma to the east. Mount Kisilyakh-Tas is a notable kigilyakh site on the right b ...

basin, have their sources in the range. The range has mountains of middle height and smooth slopes with

larch Larches are deciduous conifers in the genus ''Larix'', of the family Pinaceae (subfamily Laricoideae). Growing from tall, they are native to the cooler regions of the northern hemisphere, where they are found in lowland forests in the high la ...

forests at the bottom of the valleys.Indigirka
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Great Russian Encyclopedia The ''Great Russian Encyclopedia'' (''GRE''; , БРЭ, transliterated as ''Bolshaya rossiyskaya entsiklopediya'' or academically as ''Bol'šaja rossijskaja ènciklopedija'') is a universal Russian encyclopedia, completed in 36 volumes, publishe ...

in 35 vols. / Ch. ed. Yu.S. Osipov . - M, 2004—2017. Ulakhan-Sis Range ONC C-7

References

External links

*{{commonscat inline, Ulakhan-Sis
Ulakhan-Sis stones: a white spot on the map of Yakutia - National Geographic
Mountain ranges of the Sakha Republic