Preparations for winter's approach shift into high gear. Antlers have pushed through the bull moose's velvet skin, which now lands in bloody tatters. Autumn's chill signals the approaching mating season and a large bull chases off a younger suitor from a pack of eligible females. Feeding takes on a sense of urgency as dropping temperatures send the wood frog back underground. Soon the grizzly will retreat to its den for another extended nap in Denali. In the starry heavens above, the surreal energy of the aurora dances over the sky as the land settles down for another winter's sleep.