Mongun-Taiga
 Mongun-Taiga also known as Mungun-Taiga (Tuvan: Мөңгүн-Тайга - Silver Mountain) is a massif in Mongun-Taiga kozhuun Russia. The Russian part of the Altay Mountains is considered part of Western Siberia but Mongun-Taiga in 1932 was transferred (along with the north of Uvs Nuur Basin) from the Mongolian People's Republic of Tuva and in 1944 became part of Eastern Siberia.