As snow and ice transform the quiet landscape during the winter season, the Apostle Islands National Lakeshore offers a popular attraction in the dazzling shoreline ice caves at Mawikwe Bay. The caves are part of the mainland unit of the park.
When the Ice Caves are open - a rare occurrence in and of itself - visiting numbers literally get up into the 10,000+. Thousands brave the cold - not to mention the frigid, icy winds of Lake Superior - and trek a mile on ice and snow to explore and photograph the surreal ice formations. It's a mini-expedition in endurance, but it pays off in the real-life majesty of an unofficial wonder of the world.