Apostle Islands Ice Caves, Winter caves along Lake Superior in Wisconsin, United States.
The sandstone cliffs of Apostle Islands National Lakeshore transform into ice caves when Lake Superior freezes, displaying white and amber colored formations.
Native American tribes inhabited the Apostle Islands region for thousands of years before European settlers arrived in the 18th century for fishing and lumber.
The ice caves attract photographers and nature observers who document the seasonal formations, contributing to regional winter tourism in northern Wisconsin.
Access to the caves requires checking official announcements, as they open only during specific winter conditions when Lake Superior freezes sufficiently.
These caves remain accessible only 2% of winter days since 2000, making them among the most limited natural formations in the United States.
GPS coordinates: 46.88375,-91.04879
Latest update: March 5, 2025 11:24
Wisconsin contains numerous natural areas and historic sites away from typical tourist routes. Geological features include Cave of the Mounds with limestone formations, Parfrey's Glen with an 800-foot gorge, and Pewit's Nest State Natural Area with sandstone cliffs. The Apostle Islands Ice Caves offer seasonal ice formations along the Lake Superior shoreline. Rock Island State Park and Schoolhouse Beach on Washington Island provide access to remote islands and coastal areas. Devil's Lake State Park and Blue Mound State Park feature trails through varied terrain.
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