Autumn carpets the Carpathian Mountains in vibrant gold. As days shorten, life enters a season of preparation. Deer stags fight like gladiators over the females, bears feast to fatten up for the winter, and the old-growth forests perform their most magical trick: absorbing carbon to regulate the Earth's temperature.

Gripped by ice in winter, the Carpathian Mountains teem with life thanks to adaptations that help animals survive. Chamois' hooves enable them to race down cliffs, crossbills' hooked beaks pluck seeds from pinecones, and capercaillie digest pine needles by eating stones. One of the world's rarest animals, a lynx, finds a mate through scent.