This lovely book brings together facts about the Arctic, a poetic, evocative narrative, and breath-taking illustrations. The story begins at the outer edge of the Arctic Circle, where the extraordinary wood frog is beginning to freeze, and then works its way inwards to the north pole - through the tundra then into the sea and ice at the very centre. Then the scenes work their way back outwards. As the book progresses, winter progresses. By the end we are back to the taiga, back to spring after the long winter, and back to the wood frog, who is defrosting now.