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U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
202-366-4000
Water flows over rocks at the narrow floor of Black Canyon Gorge. Trees bright with green line the walls of this gorge carved by water in an ancient lava flow.
Public Domain. Photo by Tony Varilone
Download Original (2048 x 1536 pixels, 1295.3 MB)
