The Apostle Islands shoreline caves became a remarkable winter destination in 2014, with dense icicles transforming the rock openings. People in the photographs reveal the scale of the frozen forms.



These are shoreline caves with seasonal ice
They are not tunnels inside a glacier. Water freezing along the rock creates the decorations, while access from the lake depends on separate conditions.
An old access year is not a future promise
The National Park Service maintains specific ice-cave information and closures. A long cold spell or attractive photograph is not enough to decide the route is open. Use the gallery to understand the setting, then check the park’s current status before making travel plans. The ice display and safe access are two different questions.







Further information: NPS Apostle Islands ice-cave status and guidance
Explore more: a glacier-cave setting with different processes; winter access limits at Minnehaha Falls.
The winter documented in these photographs
The collection belongs to February 2014, when visitors were able to approach the mainland caves across lake ice. The contemporary account described the first such access since 2009 and a substantial wave of visitors. Those details explain the excitement surrounding the photographs: the pictures recorded an unusual opportunity, not an attraction with guaranteed access every winter.
Rock caves dressed in ice
Waves helped shape the shoreline caves over time. Their winter decoration is a separate, temporary layer: the National Park Service describes ice forming from water splashing against rock and seeping through sandstone layers. This gives the formations a different origin from a passage within a glacier. A rock opening can persist while its icicles and frozen curtains change from season to season.
Human figures reveal the scale
Peterson’s photographs move between the overall cave openings and the ice within them. A person beneath a broad frozen curtain makes its size immediately readable, while a closer frame separates individual icicles from the larger mass. Both views are needed to appreciate the display: one establishes the shoreline setting, the other reveals the variety of forms. The Star Tribune credit connects those observations with a named photographer’s record of the exceptional February 2014 visiting conditions.
Why access and appearance are separate
NPS explains that stable access depends on a combination of ice quality, anchoring, wind and lake conditions. Attractive formations on the cliff do not answer those questions. Its official ice-cave page is the place to check the status before planning around a lake approach. The full 2014 gallery records that exceptional event; a future visit depends on conditions in its own season.
Sources, photography and further reading
Original feature and image attributions:
- Associated Press
- At First, It Looks Like Aliens Invaded Us. But Zoom Out And Learn The Truth… AMAZING.
- Snow Melts And Flash-Freezes Into Icy Downhill River
- That's Genius! How to Make Fire from Ice
- Extremely Rare Spinning Ice Circle Over 50ft Wide Forms in North Dakota River!
- It Looks Like A Crazy Guy Just Walking Around In The Snow. Then You Zoom Out And.. Whoa.
- NPS Apostle Islands ice-cave status and guidance
- a glacier-cave setting with different processes
- winter access limits at Minnehaha Falls
Current reference information, checked 15 September 2026:




In this Feb. 2, 2014 photograph, individuals visit the caverns at Apostle Islands National Lakeshore in northern Wisconsin, changed into a stunning showcase of ice figures by the cold attack grasping the Upper Midwest. The caverns are generally open exclusively by water, yet Lake Superior's unshakable ice cover is allowing individuals to stroll to them interestingly beginning around 2009.
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