{{Short description|Mountain range in Sakha Republic}} {{Redirect|Udokan|the volcanic field|Udokan Plateau}} {{Infobox mountain |name= Udokan Range<br />хребет Удокан |image= Вулкан Аку, Каларский район.jpg |image_caption= Remnants of ancient volcanic activity in the western Udokan Range. |image_size= |country=Russia |region_type=Federal subject |region=Zabaykalsky Krai /<br /> Yakutia / Amur Oblast |parent=Stanovoy Highlands<br />South Siberian System |borders_on= |highest= Unnamed |elevation_m= 2570 |coordinates = {{coord|56|40|20|N|119|07|32|E|display=inline|name=}} |length_orientation = SW / NE |length_km=210 |width_km=50 |area_km2= |range_coordinates = {{coord|56|50|N|119|20|E|type:mountain|format=dms|display=inline,title}} |geology=Gneiss, crystalline schist, volcanic rock |age= Precambrian |orogeny= |map=Russia Zabaykalsky Krai |map_size= |map_caption= Location in Transbaikalia |easiest_route= From Chara Airport }}
The '''Udokan Range''' ({{langx|ru|хребет Удокан}}) is a mountain range in Sakha Republic (Yakutia) and Zabaykalsky Krai, Russian Federation.<ref name="ETB">{{cite web |title=Удокан, хребет|publisher=Энциклопедия Забайкалья |language=Russian |trans-title=Udokan, mountains|url=http://ez.chita.ru/encycl/concepts/?id=2558|accessdate=21 September 2021}} {{in lang|ru}}</ref> The nearest town is Chara.<ref name="GЕ">Google Earth</ref>
There is copper mining in the range at the Udokan mine, part of the Udokan Ore Region that includes the Kalar and Kodar ranges.<ref name="ЭСБЕ2">[http://bse.sci-lib.com/article113643.html Udokan Ore Region] / ''Great Soviet Encyclopedia:'' in 30 vols. - Ch. ed. A.M. Prokhorov. - 3rd ed. - M. Soviet Encyclopedia, 1969-1978.</ref> A stretch of the Baikal–Amur Mainline passes through the range following the valley of the Khani river.<ref name="GЕ"/>
==History== {{see also|Aeroflot accidents and incidents in the 1960s}}
The Udokan was first described and mapped in 1857 by A.F. Usoltsev, Lieutenant of the Corps of Military Topographers of the Russian Imperial Army.<ref>Obruchev V. A., [https://agesmystery.ru/rubriki/ekspedicii-naxodki-i-sokrovishha/shvarc-na-yugo-vostoke-sibiri/ Шварц на юго-востоке Сибири (Schwartz in the southeast of Siberia)] {{Webarchive|url=https://web.archive.org/web/20201127164342/https://agesmystery.ru/rubriki/ekspedicii-naxodki-i-sokrovishha/shvarc-na-yugo-vostoke-sibiri/ |date=2020-11-27 }} (in Russian)</ref>
On 5 July 1965 an Aeroflot Antonov An-2R struck a mountain of the Udokan Range on a flight between Ust-Nyukzha and Chara. The aircraft encountered poor weather with low clouds and rain while flying along the Khani river valley. The plane struck the side of a mountain of the range at {{convert|1800|m|ft|abbr=on}}. The wreckage was found on 16 July 1969. There were three fatalities. The An-2 had been operating a Tynda–Ust-Nyukzha–Chara cargo service.<ref name="ASN">[https://aviation-safety.net/database/record.php?id=19660226-0 Accident description for CCCP-79910 - Aviation Safety Network]</ref>
==Geography== The Udokan Range rises in the central area of the Stanovoy Highlands, to the south of the upper course of the Chara, a left tributary of the Olyokma. It stretches from SW to NE for roughly {{convert|255|km|abbr=on}} from the middle northern slopes of the Kalar Range to the river valley of the Olyokma, a right tributary of the Lena. To the north it borders with the Olyokma-Chara Plateau —in the upper reaches of the Chara river. To the south the range is bound by the valley of the Khani river, a left tributary of the Olyokma. The highest summit is a {{convert|2570|m|ft}} high unnamed ultra prominent peak.<ref name="STM">{{cite web|url=https://maps.vlasenko.net/smtm1000/n-51.jpg|title=N-49 Chart (in Russian)|access-date=21 September 2021}}</ref><ref name="ЭСБЕ">[http://bse.sci-lib.com/article113642.html Udokan] / ''Great Soviet Encyclopedia:'' in 30 vols. / Ch. ed. A.M. Prokhorov. - 3rd ed. - M. Soviet Encyclopedia, 1969-1978.</ref>
The range is part of the Baikal Rift Zone and displays signs of volcanic relief at its southwestern end, in the area where it merges with the Kalar Range.<ref name="ETB"/>
===Hydrography=== A number of rivers have their sources in the range, including the Tokko and the Kalar. There are also glacial landforms and sediments that are remnants of Pleistocene glaciation.<ref name="ETB"/>
{| |- valign="top" |[[File:Operational Navigation Chart D-7, 6th edition.jpg|thumb|300px|Defense Mapping Agency topographical map showing the Udokan Range in the lower part.]] |}
==Flora== The lower slopes of the range are mainly covered by larch taiga, with pre-alpine woodland, mountain tundra and bare rocky summits ''(golets)'' at higher elevations.<ref name="ETB"/>
==See also== *Baikal Rift Zone *List of mountains and hills of Russia *List of ultras of Northeast Asia
==References== {{Reflist}}
{{Authority control}}
Category:Stanovoy Highlands Category:Mountain ranges of Russia Category:Mountain ranges of the Sakha Republic Category:Mountains of Zabaykalsky Krai Category:Ultra-prominent peaks of Asia
{{ZabaykalskyKrai-geo-stub}} {{SakhaRepublic-geo-stub}}