With just 13 days left until they go into labor, this herd still has 180 miles to go.
With just 13 days left until much of the herd is due to give birth, this herd still has 180 miles to go. But the herd finally arrives where the team predicted. They descend from the mountains, spilling into the valley by the thousands.
AIR DATE 7/19/17
Traverse the Arctic wilderness and African bush as scientific teams utilize new technology to track caribou, zebras and elephants as they overcome obstacles and face fearless predators on their epic journeys.
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