Bison in Grasslands National Park, Saskatchewan, under a stormy sky, Val Marie, Saskatchewan, Canada

prairie field horizon vast weather outdoors day daytime herd expanse distant hills fields prairies bison saskatchewan vastness grasslands rolling hills herds bison bison animals cloud wildlife wide open spaces outside grass nobody rural storm national parks national park grazing color image american bison animals in the wild small group of animals expansive no one no people grasslands national park