Lake Baikal
Planetobserver/science Photo Library
Shuttle Sts-45 View Of Lake Baikal
Nasa/science Photo Library
Marathon Runners
Louise Murray
Cracked Ice
Louise Murray
Lake Baikal
Collection Abecasis/science Photo Library
Marathon Runners #1
Louise Murray
Marathon Runner
Louise Murray
Marathon Runner #1
Louise Murray
Ice Thickness Measuring
Louise Murray
Irkutsk
Planetobserver/science Photo Library
Cave Icicles
Louise Murray
Methane Hydrate Under Ice
Louise Murray
Methane Hydrate Under Ice #2
Louise Murray
Methane Hydrate Under Ice #4
Louise Murray
Methane Hydrate Under Ice #3
Louise Murray
Olkhon Island
Louise Murray
Dog Sledding
Louise Murray
Amphipod Crustacean
Petr Jan Juracka
Cave Icicles #2
Louise Murray
Cave Entrance
Louise Murray
Cave Icicles #1
Louise Murray
Methane Hydrate Under Ice #1
Louise Murray
Cave Icicles #3
Louise Murray
Lake Baikal, satellite image
Science Photo Library
Lake Baikal, Russia, Satellite Image
Nasa
Tunguska Event #1
Joe Tucciarone
Tunguska Event #2
Joe Tucciarone
Tunguska Event
Joe Tucciarone