Buffalo (Bison bison) herd crossing the Yellowstone River in Yellowstone National Park, Wyoming, USA.

animal theme animal themes animals bison bison buffalo buffalos crossing flora hayden valley horizontal horizontals in a line in line in lines in the wild landscape landscape and scenic landscapes and scenics line mammals mammal medium group of animals mgoa national park national parks no one no people no person no body no one nobody np nps plant plants river rivers scene scenery scenes scenic scenics submerged to cross tree trees vegetation view views water wild animal wild animals wildlife wild wood yellowstone national park yellowstone yellowstone river