Smoke East of Lena River, Russia67.6N 125.8E
A thick swath of smoke sweeps diagonally across the left side of this image of Russian Siberia. Visible west of the smoke is the Lena River, the easternmost of the three great Siberian rivers that flow into the Arctic Ocean (the other two being the Ob River and the Yenisei River). It is the 11th longest river in the world and has the 9th largest watershed. It is the greatest river whose watershed is entirely within national ranges of Russia.