Podkamennaya Tunguska, River system in Krasnoyarsk Krai and Irkutsk Oblast, Russia

The Podkamennaya Tunguska is a river system flowing through Siberia, originating in the Angara Range and merging with the Yenisei River. The waterway winds through remote forest landscapes with rocky banks and challenging navigation conditions.

The river gained international attention in 1908 when a massive explosion occurred near its banks, flattening millions of trees across a vast area. This event became one of the most mysterious natural phenomena and attracted scientific investigation from around the world.

The name means "Stone Tunguska" in Russian, referring to the rocky and pebbly bed that defines the waterway. Visitors can observe how the stony character shapes the river's appearance and the surrounding terrain.

Travel on the river is possible during summer months, particularly between Baikit and the mouth where navigation is accessible. Visitors should prepare for remote conditions and expect ice coverage from October through May, which restricts seasonal access.

The river exhibits extreme seasonal fluctuations in water flow, with dramatic differences between winter lows and summer floods. These stark variations make the waterway a unique hydrological system that transforms significantly throughout the year.