Ulakhan-Sis Range
{{Short description|Mountain range in Sakha Republic, Russia}}
{{about||the Ulakhan-Sis by the Yana|Kular Range}}
{{Infobox mountain range
|name=Ulakhan-Sis Range
|other_name= Улахан-Сис
|photo=Улахан-Сис.jpg
|photo_caption= Panorama of the range
|country=Russia
|region_type=Federal subject
|region=Sakha Republic
|region1=
|border=
|highest=Vilka
|elevation_m=754
|coordinates =
|length_km=160
|width_km=
|area_km2=
|range_coordinates = {{coord|69|30|N|149|42|E|type:mountain|format=dms|display=inline,title}}
|range_coordinates_note=
|parent = East Siberian System
|geology=Granite, sandstone, effusive rock
|geology1=
|period=Devonian
|period1=
|orogeny=
| map =Russia Sakha Republic
| map_caption = Location in Sakha, Russia
}}
The Ulakhan-Sis Range ({{lang-rus|Улахан-Сис}}; {{langx|sah|Улахан Сис}}) is a mountain range in the Sakha Republic, Far Eastern Federal District, Russia.[https://dic.academic.ru/dic.nsf/bse/142699/%D0%A3%D0%BB%D0%B0%D1%85%D0%B0%D0%BD-%D0%A1%D0%B8%D1%81/ Улахан-Сис (Ulakhan-Sis)] / Great Soviet Encyclopedia; in 35 vols. / Ch. ed. Yu. S. Osipov. 2004—2017.
This range is one of the areas of Yakutia where baydzharakhs are found.Russian Academy of Sciences, Geology Bulletin. (Izvestiya Akademii Nauk. Seriya Geologicheskaya), Issues 1-7. p. 55 Kigilyakh rock formations are also found on this range.[https://dnevniki.ykt.ru/%D0%BC%D0%B8%D1%85%D0%B0%D0%B8%D0%BB_%D0%BC%D0%B5%D1%81%D1%82%D0%BD%D0%B8%D0%BA%D0%BE%D0%B2/1142722 Ykt - Вернулись из Гранитных Городов Улахан Сис][https://dnevniki.ykt.ru/%D0%BC%D0%B8%D1%85%D0%B0%D0%B8%D0%BB_%D0%BC%D0%B5%D1%81%D1%82%D0%BD%D0%B8%D0%BA%D0%BE%D0%B2/1146403 Кисиляхи]
History
The Ulakhan-Sis was first mapped in the summer of 1870 by geographer and ethnologist Baron Gerhard von Maydell (1835–1894) during his pioneering research of East Siberia.[http://sibhistory.edu54.ru/%D0%9C%D0%90%D0%99%D0%94%D0%95%D0%9B%D0%AC_%D0%93%D0%B5%D1%80%D0%B3%D0%B0%D1%80%D0%B4_%D0%9B%D1%8E%D0%B4%D0%B2%D0%B8%D0%B3%D0%BE%D0%B2%D0%B8%D1%87 Siberian History - МАЙДЕЛЬ Гергард Людвигович]
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, northwest and west of the Kolyma Lowland and northeast of the Aby Lowland, along the interfluve of the Erna and Shandrin rivers in the northwest, Shangina in the south, and Khatysty and Arga-Yuryakh in the southeast.
The main ridge stretches in a roughly east/west direction from the western end of the smaller Suor Uyata (Суор-Уята) to the east and the headwaters of the Sundrun River to the Indigirka for about {{convert|160|km|sp=us}}.Google Earth The highest peak is {{convert|754|m|ft}} high Vilka. To the north rises the Kondakov Plateau, a lower and wider extension of the range. In the west, the Polousny Range, 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. Rivers Bolshaya Ercha, a tributary of the Indigirka, and Arga-Yuryakh, of the Alazeya basin, have their sources in the range.{{cite web|url=https://maps.vlasenko.net/smtm1000/r-55_56.jpg|title=R-55_56 Topographic Chart (in Russian)|access-date=23 May 2022}}
The range has mountains of middle height and smooth slopes with larch forests at the bottom of the valleys.[https://bigenc.ru/geography/text/2008739 Indigirka] / Great Russian Encyclopedia in 35 vols. / Ch. ed. Yu.S. Osipov . - M, 2004—2017.
| valign="top" |
References
{{Reflist}}
External links
- {{commonscat inline|Ulakhan-Sis}}
- [https://nat-geo.ru/nature/kamni-ulakhan-sis-beloe-pyatno-na-karte-yakutii/ Ulakhan-Sis stones: a white spot on the map of Yakutia - National Geographic]