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Thousands of visitors make the 1 mile hike to view fantastic ice formations in the mainland sea caves at Apostle Islands National Lakeshore in northern Wisconsin. For the first time in 5 years, Lake Superior is frozen solid enough to allow foot traffic to the caves, and for the last several weeks a constant stream of visitors has made the trek.
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Keith Crowley
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Thousands of visitors make the 1 mile hike to view fantastic ice formations in the mainland sea caves at Apostle Islands National Lakeshore in northern Wisconsin. For the first time in 5 years, Lake Superior is frozen solid enough to allow foot traffic to the caves, and for the last several weeks a constant stream of visitors has made the trek.