Red-crowned cranes roost by the Setsuri River, as it is a water source that does not freeze in winter. On winter mornings, when the temperature reaches -20°C, steam rises from the river and white frost flowers cover the trees. These magical conditions are the backdrop of the red-crowned cranes' morning flight to their feeding ground, and the sight is so wondrous that photographers line up on Otowa Bridge to get a shot. Wait on the bridge and you might even see a crane flying right overhead.