Tunguska

The Lower Tunguska winds through the forested plateau of central Siberia, carrying water west towards the Yenisei. Near the mouth of the Kochechum it gathers a major tributary from the north, while the valley around the meeting of the rivers has long been used by Evenki communities. In the seventeenth century Russian expeditions travelled along the Tunguska, whose rapids and great seasonal floods made passage difficult.