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Smithsonian Channel Documentaries - America's Yellowstone

Seizoen: 2015 - Aflevering: 13 / 149 - Eerst uitgezonden: Onbekend - Episode ID: 1192933

Welcome to Yellowstone, America's oldest and largest national park. Lose yourself in the majestic landscapes that serve as a giant natural laboratory, with over three million geysers, fifty species of mammals, and three hundred species of birds.