I had an assignment years ago to photograph a rafting trip on the Copper River from WR-SE to Cordova, Alaska, and it was one of the wildest places I have been.
 
One morning, we awoke to find our riverbank campsite flooding from rapidly rising water. We had about an hour to break camp before it was totally underwater and one of my last photos was my fellow guest standing on a patch of sand that was probably 6’x6′. We all got aboard and launched.
 
A couple days later the waters had subsided and left these amazing patterns in the soft mud. The guides said the cause was most likely an ice dam in the river, way up in the Chugach Mountains, has busted unleashing the water.
 
I was treated in the aftermath, to these amazing patterns along the riverbank. 
I used my Canon EOS 1N and Canon 16-35mm lens for the shot with the lens set to 16mm. That made the foreground closer to the camera which emphasizes the foreground. I next processed the photo in Photoshops B&W adjustment layer.
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