A Bison crosses the road between two fire engines during 1988 Yellowstone fire, image taken by Jeff Henry, 1988 and retrieved from the following page [1] of the Yellowstone Digital Slide Files archives which are all in the public domain [2]

This image or media file contains material based on a work of a National Park Service employee, created as part of that person's official duties. As a work of the U.S. federal government, such work is in the public domain in the United States. See the NPS website and NPS copyright policy for more information.