Season 8.
Season 1.Season 2.Season 3.Season 4.Season 5.Season 6.Season 7.Season 8.Season 9.Season 10.Season 11.Season 12.Season 13.Season 14.Season 15.Season 16.Season 17.Season 18.Season 19.Season 20.Season 21.Season 22.Season 23.Season 24.Season 25.Season 26.Season 27.Season 28.Season 29.Season 30.Season 31.Season 32.Season 33.Season 34.Season 35.Season 36.Season 37.Season 38.Season 39.Season 40.Season 41.Season 42.
Number of episodes: 20
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Episode 1.The Great Rift: Footprints in the Valley
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Episode 2.The Great Rift: Out of the Ashes
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Episode 3.The Great Rift: Breaking the Continent
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Episode 4.Under the Ice
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Episode 5.Land of Dragons
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Episode 6.The Great Wood of Caledon
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Episode 7.Gorillas
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Episode 8.Forest of Fear
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Episode 9.Gran Paradiso
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Episode 10.Cranes of the Grey Wind
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Episode 11.King Solomon's Mountains
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Episode 12.Hunters of the Sky
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Episode 13.A Wolf in the Fold
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Episode 14.The Colorado
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Episode 15.The Emerald Isle
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Episode 16.Giant Otters
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Episode 17.The Haida Gwai: Islands of the People
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Episode 18.Presque Isle: Land in Motion
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Episode 19.Yellowstone on Fire
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Episode 20.Serpents