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This Canadian national park is home to the world's largest beaver dam: 'The size of 1600 hockey rinks'

Beaver dams provide habitats for the mammals while slowing floodwaters and filtering pollutants from water.

The World's Largest Beaver Dam Is Tucked Away In Canada's Largest National Park

The largest beaver dam in the world, roughly double the length of the Empire State Building, is a feat of nature that's best seen from the skies.

Beavers spent decades building a dam in the Canadian wilderness: Today, it spans 8 football fields and can be seen from space

Built over decades in a remote corner of Canada, the enormous structure is one of the most remarkable examples of animal engineering.