Ice caves on Lake Superior in the Apostle Islands National Lakeshore
Lake Superior finally froze enough last week to allow access to one of northern Wisconsin’s most stunning natural formations: the Bayfield Peninsula’s lakeshore caves. The caves are part of the Apostle Islands National Lakeshore and have been carved out of red, orange and yellow layers of sandstone over millenniums of wave action.
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(Reporting by Liam Ford, photography by Zbigniew Bzdak, Chicago Tribune)