The series premiere visits the southern tip of South America, a region with terrain as varied as its weather. Here, vast glaciers, towering peaks, active volcanoes and prehistoric forests form the backdrop to the lives of scavenging condors, sly foxes and a mother puma trying to feed her hungry cubs. On the western flanks of these southern ranges lies the Valdivian rainforest, the southernmost rainforest in the world, home to a secret world of creatures found nowhere else. Here, the male Darwin's frog nurtures its clutch of tadpoles in its throat, while a pair of pheromone-fueled Darwin's stag beetles battle over a female 60 feet above the forest floor.

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Nature