Explore beautiful ice caves practically by yourself and hike on the ice of Lake Superior -- the largest lake in the world!
Begin at Meyer's Beach in the Apostle Islands National Lakeshore near Cornucopia, WI. There is a parking lot, but get there early in the day to get a spot and make sure to use the bathroom before heading out. There is no opportunity on the ice.
Head out onto the frozen lake and follow the shoreline east about a half a mile to the first caves. The caves, arches, and ice formations extend a mile along the shoreline.
You can probably explore the entire area in a couple hours if you're quick, but pack a lunch, spend the day, and take your time climbing through ice passageways, sliding down frozen waterfalls, and looking at ice extending to the horizon.