Hiking To This Aboveground Cave In Wisconsin Will Give You A Surreal Experience

Wisconsin has its share of caves and caverns, but none is more breathtaking than at the Apostle Islands. The trick is that they are only open for hiking during the winter, and only then when conditions are cold enough that ice freezes over (you can kayak through them during the summertime). Here are some impressive shots of the cave.

Have you ever visited this cave?