World's Biggest Beaver Dam Visible From Space
 

Canadian beavers built the world's longest dam -- so big it can be seen from space, The Sun reported Tuesday.

The incredible woodland construction is a staggering 2,790 feet in length -- more than half a mile long.

It is twice the size of what was the world's largest, the Hoover dam, which borders Arizona and Nevada in the U.S. and spans 1,244 feet. The furry critters use trees, mud and stone to make a type of moat where they can use their swimming skills to evade any predators.

http://www.foxnews.com/scitech/2010/...visible-space/