13th Annual Smithsonian Magazine Photo Contest Natural World
Guard Duty
A bull elk stands guard over his harem, Mammoth Hot Spring, Yellowstone National Park
Photo Detail
| Date Taken: | 10.2014 |
| Date Uploaded: | 11.2015 |
| Photo Location: | Mammoth Hot Spring, Wyoming, United States of America |
| Camera: | NIKON D3 |
| Copyright: | © Vito Marrone |