(1 in a multiple picture album)
If you have seen the Colorado River where it carves the Grand Canyon, or where it cascades down towards Lake Mead near Las Vegas, you might have a hard time believing t
The Colorado River near its source — a narrow, gentle stream far removed from the powerful river it becomes downstream. © inkknife_2000 (7.5 million views +), CC BY-SA 2.0, via Wikimedia Commons

More on this story