An imposing line of caribou stretches for miles across the frozen tundra of Alaska. The sound of clicking hooves echoes through the air as the herd follows its centuries-old migration route. With their thick coats and their padded, shovel-like hooves, caribou are ideally adapted to their snowbound environment, and this lively children's book explores their habits and habitat--as well as the dangers that await the young and old--along this ancient trail. Writer Debbie Miller and artist Jon Van Zyle are keen naturalists and the premier duo in Alaska children's literature, and this beautifully-illustrated appreciation of the caribou brings this stately mammal alluringly to life.