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Extras

Video thumbnail: Nature Preview of The Alps: Winter's Fortress

Nature

Preview of The Alps: Winter's Fortress

Experience the hostile and bitter cold ecosystems of the Alps, shaped by snow blizzards.

Preview of The Alps: Winter's Fortress

Video thumbnail: Nature Rival Bucks Fight Over Mate

Nature

Rival Bucks Fight Over Mate

Among the chamois in the Alps, the mood is tense.

Rival Bucks Fight Over Mate

Video thumbnail: Nature Secrets of Marmot Hibernation

Nature

Secrets of Marmot Hibernation

A family of marmots prepares for their upcoming hibernation in a den 6 feet underground.

Secrets of Marmot Hibernation

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