Tunguska

The Lower Tunguska cuts through the Central Siberian Plateau on its way west to the Yenisei. In its middle course rocky beds and narrow valleys create formidable rapids, including stretches around the Uchami River. Water levels change greatly with the seasons: the river freezes through the long winter, then rises sharply as snow melts. The surrounding taiga is a country of coniferous forest, ridges and tributary valleys.