Some have likened Fuller to a seasoned bison bull%2C weathering Yellowstone%27s elements%2C moving discreetly in and out of view. In this Fuller photograph%2C a bull trudges across the snowdunes of Hayden Valley. %26quot%3BIn winter%2C%26quot%3B he says%2C %26quot%3Bthe snow%2C sculpted by wind%2C is endlessly fascinating and the landscape%2C flooded with light%2C shadow and even moonshine%2C is anything but monochromatic.%26quot%3B