Mongolia–Russia border
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The Mongolia–Russia border is the international border between Mongolia and the Russian Federation. It runs from west to east between the two tripoints with China for 3,452 km (2,145 mi). The boundary is the third longest border between Russia and another country, behind the Kazakhstan–Russia border and the China–Russia border.
The Sino-Russian border within the regions of Mongolia, as it ran throughout the 19th century, largely corresponded to today's Mongolia–Russia border; the main difference is the absorption of Tuva into Russia
The peak of Mt Munku Sardyk is located on the Mongolia–Russia border
Tourists at the border
Border sign
Buryatia
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Buryatia, officially the Republic of Buryatia, is a republic of Russia located in the Russian Far East. Formerly part of the Siberian Federal District, it has been administered as part of the Far Eastern Federal District since 2018. It borders Irkutsk Oblast and Lake Baikal, the deepest lake in the world to the north, Zabaykalsky Krai to the east, Tuva to the west and Mongolia to the south. Its capital is the city of Ulan-Ude. It has an area of 351,300 square kilometers (135,600 sq mi) with a population of 978,588. It is home to the indigenous Buryats.
View of Lake Baikal in Buryatia
View of the valley of the Uda near the village of Khorinsk
Landscape of southern Buryatia
Unusual blue diopsidite skarn from the Dovyren Highlands, Buryatia.