Explore The Ice Caves at Wisconsin's Apostle Islands

NOTE: The ice caves form under specific winter conditions that are not guaranteed each season. Visit the Apostle Islands National Lakeshore's Facebook page for the most current information. In the meantime, read about what the caves are like when safely frozen solid, and take in the area's winter beauty along miles of mainland hiking trails. 

What Are the Apostle Islands Ice Caves?

Wisconsin’s 21 Apostle Islands are scattered offshore from Bayfield in Lake Superior. When winter temperatures allow, the sea caves and rock formations on some of the islands become stunning ice caves and are reachable by crossing the Great Lake about a mile on foot.

Park officials will carefully monitor the ice conditions and update the public when this hike is safe. Even when conditions are right, you and your crew may feel the water moving below, and conditions can change quickly.

The Apostle Islands mainland ice caves feature some of the most spectacular cliffs and sea caves found in the Great Lakes. The features are different every year, as is the route to see them.

According to the National Park Service, the caves are a “fairyland of needle-like icicles.” The ice formations change from chamber to chamber and from day to day. The beautiful rock formations hanging above you and jutting up from the ground below will be covered by ice, creating a show-stopping display. Inside the caves, you may even be able to see to the bottom of the lake.

How to Access the Ice Caves

Be prepared for a 2-6 mile walk across the ice, depending on how far you want to explore. Dress for the weather and keep in mind there are steep steps going down to the caves. There are plenty of options for lodging and restaurants in Washburn, Bayfield and Iron River, or stay on Madeline Island for a special adventure. Use Sea Caves Watch to see real-time images of conditions at the Mainland Sea Caves.