Date:17 April 2014
The Lena River, some 4 500 km long, is one of the largest rivers in the world. The Lena Delta Reserve is the most extensive protected wilderness area in Russia. It is an important refuge and breeding grounds for many species of Siberian wildlife.
This image was captured by the Landsat 7 satellite on 1 July 2000.
Image credit: Earth Resources Observation and Science Centre | US Geological Survey