South of this lowland is the Siberian Platform. Most of this consists of the Central Siberian Plateau(1) at 300 to 750 meters. In the northwest are the Putorana Mountains (gory), rising above 2000 meters. The west bound is abrupt: a rise of more than 700 meters from the river to the Yenisey Ridge (kryazh). Southeast of the ridge is the Sayan(2) Range (khrebet), steep-sided mountains that approach 3000 meters, and straddle the south edge of this area. This ruggedness continues in the Pre(3)-Baykalia(4) and Trans(5)-Baykalia regions that surround Lake Baykal(6), the world's deepest lake. Part of the Trans-Baykalia region is the Yablonovy(7) Range--part of the continental divide between Arctic and Pacific drainage. The lake receives the Selenga and discharges by the Angara.
West of the Sayans are the much higher Altay. Several peaks top 4000 meters, the highest being Mount (gora) Belucha(8) on the Kazakh frontier. These mountains have northward extensions which partly delimit in the still quite high Minusinsk and Kuznetsk Basins(9). The latter contains Russia's second most important coal deposits.
(1) Ploskogorye in transliterated Russian.
(2) Also transliterated from Russian as Sajan.
(3) Pri in transliterated Russian.
(4) Baykal[ia] can also be transliterated from Russian as Bajkal[ia].
(5) Za in transliterated Russian.
(6) The world's eight largest in surface area, and Asia's third largest.
(7) Also transliterated from Russian as Jablonovj.
(8) Also transliterated from Russian as Belukha.
(9) The Kuznetsk Basin is also called the Kuzbass.