: The Ural Mountains serve as the traditional boundary between Europe and Asia. The Volga River is the longest in Europe.
: It is home to Lake Baikal , the world's deepest and oldest freshwater lake, which contains about one-fifth of the Earth's unfrozen surface water. russia
: Its terrain ranges from the treeless steppes (plains) to the sprawling taiga (pine forests) of Siberia. : The Ural Mountains serve as the traditional
