: 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.
: Its terrain ranges from the treeless steppes (plains) to the sprawling taiga (pine forests) of Siberia. russia
Russia is the largest country in the world, covering approximately and spanning 11 time zones . : It is home to Lake Baikal ,