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A deep freeze has cleared the way for visitors to look at amazing ice cave formations on Lake Superior in the Apostle Islands. "That day was like a step through an amazing curtain," says photographer Mary Dougherty of her experience at the caves.
Find out more about the Apostle Island ice caves and how long officials expect they'll be around this winter.
PHOTOS COURTESY OF MARY DOUGHERTY
Published on January 28, 2014