foxnews.com: http://www.foxnews.com/scitech/2010/05/04/enormous-beaver-dam-visible-space/
The incredible woodland construction is a staggering 2,790 feet in length — more than half a mile long.
It is thought that several beaver families joined forces to create the massive dam, containing thousands of trees, and took many months to complete it.
Je ne suis pas certain de comprendre ce que montre l’image.