Geography
While the general elevation is 2000 to 2,700 m (8,858 ft), granites and metamorphic slates reach altitudes of over 3,000 m (9,843 ft), with the highest being Mönkh Saridag at 3,492 m (11,457 ft). The principal mountain passes lie 1800 to 2,300 m (7,546 ft) above the sea, for example Muztagh pass at 2,280 m (7,480 ft), Mongol pass at 1,980 m (6,496 ft), Tenghyz pass at 2,280 m (7,480 ft) and Obo-sarym pass at 1,860 m (6,102 ft).
At 92°E the system (the Western Sayan) is pierced by the Ulug-Khem (Russian: Улуг-Хем) or Upper Yenisei River, and at 106°, at its eastern extremity, it terminates above the depression of the Selenga-Orkhon Valley. From the Mongolian plateau the ascent is on the whole gentle, but from the plains of Siberia it is much steeper, despite the fact that the range is masked by a broad belt of subsidiary ranges of an Alpine character, e.g. the Usinsk, Oya, Tunka and Kitoi ranges.
Between the breach of the Yenisei and Lake Khövsgöl at 100° 30' E. the system bears also the name of Yerghik-taiga. The flora is on the whole poor, although the higher regions carry good forests of larch, pine, juniper, birch, and alder, with rhododendrons and species of Berberis and Ribes. Lichens and mosses clothe many of the boulders that are scattered over the upper slopes. As duhas
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