Since this is a fictional world, a bunch of Arctic animals will try to help you achieve a randomly generated progressive reward, waiting for you on the grid. Even if they don't give you the biggest bonus, they certainly get a lot of cash, combined with their power to bring home Bacon.
The adventurous feature is actually just a peculiar phrase used to describe the scattered symbols and wildness that come together and act in concert. To move from a casual player to an experienced explorer, you need to trigger 8 free games by finding three or more scatter symbols. When you finish the job (and do a good job), you need to sit down and hope to appear wild during this time. Seeing that the field already has its multiplier, the spoils of your snow journey can become very large.