Ilimpeya
The Ilimpeya winds across the forested Tunguska Plateau before joining the Lower Tunguska from the south. Rising among the plateau's uplands, it bends through valleys and gorges around the Chumtre, Chuvanar and Urabchan ranges. Its long course forms part of the Yenisei basin, a network of rivers that crosses the vast forests of central Siberia.