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Deep inside Wood Buffalo National Park in northern Alberta, Canada, lies the longest beaver dam ever recorded, measuring 850 meters (2,790 feet) long, more than twice the length of the Hoover Dam.
It was first discovered in 2007 by Canadian ecologist Jean Thie while scanning Google Earth imagery for signs of melting permafrost.
Multiple generations of beavers have been building and reinforcing it since the mid-1970s... roughly 50 years.
By flooding small areas of forest, beavers create wetlands that support fish, frogs, ducks, moose, and hundreds of other species. They're nature's most overlooked engineers.
Jul 17
at
2:02 AM