6/6 Russia's Far East is home to a plethora of fauna, from sea eagles to Siberian tigers.
5/6 Siberia has temperatures of -70C and is home to Baikal, the world's oldest, deepest lake.
4/6 The Arctic tundra bursts into life in summer, a bounty of flowers, birds & grazing herds.
3/6 The arid central deserts of the former USSR, & the animals that live in these harsh lands.
2/6 Creatures of the USSR's remote mountains ranges, high deserts & inhospitable soda lakes.
1/6 This episode shows the verdant beauty of the wetlands surrounding the Caspian Sea.