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What mountain range dominates eastern Inner Mongolia?
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Inner Mongolia
Da Hinggan (Greater Khingan) Range, southeast of Hailar, Inner Mongolia Autonomous Region, China.
The eastern third of the Inner Mongolia Autonomous Region is dominated by the Da Hinggan (Greater Khingan) Range. This major mountain system serves as a significant geographic divide, separating the high Mongolian Plateau to the west from the flat lowlands of the Northeast (Manchurian) Plain to the east.12