Photo of the Colorado River running through Marble Canyon near Nankoweap Creek (near River Mile 51.5) in the Grand Canyon, Arizona.
Scott VanderKooi, U.S. Geological Survey. Public domain.
<a rel="nofollow" class="external text" href="https://www.usgs.gov/media/images/colorado-river-marble-canyon-arizona">U.S. Geological Survey</a>