Warning sign for possible unexploded artillery shells used to start avalanches. Yellowstone National Park, Wyoming, USA

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Size: 4299px × 2847px
Photo credit: © John Trax / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: artillery, avalanche, construction, control, danger, dangerous, equipment, explosives, landscape, military, national, natural, nature, outdoor, outdoors, park, pass, scene, scenery, scenic, shell, sign, signage, sylvan, usa, warning, weather, wilderness, wyoming, yellowstone