Alex Sletten

Big-cat expert Boone Smith tracks pumas in Patagonia, but the tables are turned when a big cat starts to stalk him.

In the forests of northern Finland, a mother bear wakes from hibernation to guide her cubs through a fleeting summer. For the animals here, survival is a race between seasons. Everyone must find food and mates and prepare themselves for the return of winter.

As seen by the Viking gods, the fabled wildernesses of Norway, Finland and Sweden are revealed from the skies above.