Adult bull elk (Cervus elaphus) crossing the Madison River in Yellowstone National Park, Wyoming, USA.

1 adult animals adult animal animal themes animal theme animals bull cervus elaphus deer deers elks elk hayden valley in the wild males male mammal mammals national parks national park no one no people no person no body no one nobody nps np one animal one portrait river rivers stand standing vertical water wild wild animals wild animal wildlife yellowstone national park yellowstone river yellowstone