Mature bull elk with antlers walking in deep snow at Blacktail Deer Plateau Yellowstone National Park

wapiti; buck; stag; Cervus canadensis; mature; bull; elk; male; antlers; grassland; graze; snow; winter; Blacktail Deer Plateau; Yellowstone; National Park; Wyoming; animal; land; wilderness; wild; grass; Yellowstone; feed; sundown; deer; golden; evening; Lava; Creek; red; Grand Loop; road; approach; aggressive; challenge; rack; walk; walking; deep