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Isle Royale National Park
Bookstore
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Did You Know?
The last glacier receded from this area about 10,000 years ago. As the glaciers melted, they formed a huge lake which permanently separated Isle Royale from the mainland. Today, the coolness of the big lake (Lake Superior) creates a climate in which artic plant species grow.
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Last Updated: August 29, 2009 at 15:56 EST |