People visit the caves at Apostle Islands National Lakeshore in northern Wisconsin, transformed into a dazzling display of ice sculptures by the arctic siege gripping the Upper Midwest. The caves are usually are accessible only by water, but Lake Superior’s rock-solid ice cover is letting people walk to them for the first time since 2009. AP Photo/Minneapolis Star Tribune, Brian Peterson
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In this Feb. 2, 2014 photo, people visit the caves at Apostle Islands National Lakeshore in northern Wisconsin, transformed into a dazzling display of ice sculptures by the arctic siege… AP Photo/Minneapolis Star Tribune, Brian Peterson
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In this Feb. 2, 2014 photo people visit the caves at Apostle Islands National Lakeshore in northern Wisconsin, transformed into a dazzling display of ice sculptures by the arctic siege… AP Photo/Minneapolis Star Tribune, Brian Peterson
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In this Feb. 2, 2014 photo, icicles hang from the ceiling of a cave at Apostle Islands National Lakeshore in northern Wisconsin, which has been transformed into a dazzling display… AP Photo/Minneapolis Star Tribune, Brian Peterson
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In this Feb. 2, 2014 photo people visit the caves at Apostle Islands National Lakeshore in northern Wisconsin, transformed into a dazzling display of ice sculptures by the arctic siege… AP Photo/Minneapolis Star Tribune, Brian Peterson
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In this Feb. 2, 2014 photo, people take pictures inside a cave at Apostle Islands National Lakeshore in northern Wisconsin, which has been transformed into a dazzling display of ice… AP Photo/Minneapolis Star Tribune, Brian Peterson
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In this Feb. 2, 2014 photo, people walk past a cave at Apostle Islands National Lakeshore in northern Wisconsin, transformed into a dazzling display of ice sculptures by the arctic… AP Photo/Minneapolis Star Tribune, Brian Peterson
