[2][3][4] The Synnyr stretches from SW to NE for roughly 200 kilometres (120 mi) between the Akitkan Range and the Upper Angara Range, west of the northwestern end of the Stanovoy Highlands, with the Patom Highlands to the north.

It is limited by the valleys of the Chaya and Mama rivers.

The Chuya, Kholodnaya, Tyya and Olokit have their sources in the range.

[6] The lower slopes of the range are mainly covered by larch taiga, with mountain tundra and bare rocky summits (golets) at higher elevations.

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