#72902: Sunlight on Sandstone Cave Walls
Public Domain. Photo by Jessica Dungan
Download Original (3008 x 2000 pixels, 1512.8 MB)
U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
202-366-4000
Public Domain. Photo by Jessica Dungan
Download Original (3008 x 2000 pixels, 1512.8 MB)