Which European River, The Second Longest River In Europe, Is Pictured On The Map Below?

Which European River, The Second Longest River In Europe, Is Pictured On The Map Below?

36 Danube River 2016 Danube Wikipedia.

European Rivers Rivers of Europe, Map of Rivers in Europe, Major Map of European Russia Nations Online Project.

Tourists left high and dry as drought strands European river Map of European Russia Nations Online Project.

Why has deforestation been a problem in both Russian and North European Rivers Rivers of Europe, Map of Rivers in Europe, Major .