The Lena River is the 11th longest in the world but hardly known outside Siberia and Eastern Russia. Contrasts in the part of the world are enormous. From 40 degrees Celsius at the height of summer to minus 40 degrees Celsius in winter. The people who live along this vast river often live in ramshackle wooden houses enduring these extremes of weather. At the same time they are living among one of the most spectacular river landscapes in the world - from the famous Lena Pillars in the south to the stark beauty of the river delta on the Arctic Ocean.