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The average height of the plateau is about 300 meters, the highest - 904 m. The plateau is dominated by plains, ridged and hilly terrain; in the Amur valley terrain extremely dismembered. Crystalline basement rocks are overlain by layers of sand and clay deposits in the Neogene period lakes and ancient channels of the Amur and Zeya.
On the territory of the plateau common features include larch and pine forests and birch. In the south is characterized by shrub thickets of oak and set of marshes and wetlands. Mostly found sporadic permafrost. The climate is continental with features of the monsoon, with cold, snowless winters and moderately warm summers. There are places gold deposits. The first information on the plateau were obtained Russian pioneers in the 17th century.