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Lifesaving Advice: How Shelf Ice Is Beautiful But Deadly

View from a distance of shelf ice that formed on Lake Michigan. Two people stand on the shelf ice, walking around

In certain parts of the world, the winter season can transform nature into a beautiful wonderland. While some places have frozen waterfalls for daredevils, others have frozen lakes so clear, you can see to the literal bottom! In most cases, extreme caution should be taken whenever you get near ice or a frozen body of water.

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While this can be obvious in some cases, you might be surprised at just how deadly some forms of ice can be for folks who get too close. Shelf ice is the perfect example. It may not sound familiar, but if you’ve ever been near a beach during the winter, you’ve likely seen shelf ice for yourself.

View from a distance of shelf ice that has formed on Lake Michigan
Wikimedia Commons

Shelf ice forms from breaking waves and spray that freeze in frigid temperatures. As a result, ice forms in unusual yet beautiful patterns. These mounds of ice can get rather large, appearing as though they’re strong enough for human weight. On the contrary, shelf ice is never stable enough to be walked on.

According to the National Park Service, shelf ice is not a “continuous sheet.” They form without freezing to the bottom of lakes, making it easy for weaknesses to form.

Do You Understand the Dangers of Shelf Ice? This Simple, Educational Video Will Help

“I don’t think enough people understand how dangerous shelf ice can be or what it exactly is…” the caption of the below video reads. “Stay safe out there people!”

@dunesbeachglass I don’t think enough people understand how dangerous shelf ice can be or what it exactly is. Please see the diagram at the end of the video for a better explanation. Stay safe out there people! #indianadunes #shelfice #lakemichigan #indianadunesnationalpark #indianadunesstatepark #besafe ♬ Snowy Morning – FREDERIC BOUCHAL

When weaknesses form, and are stepped on, people can be sent plummeting into the icy water below. And because of the way the ice forms, there is likely no chance of getting yourself out. Check out the helpful video above to better understand this danger.

Want to admire shelf ice in a way that is safe? The National Park Service has some advice. It can be tricky to tell where the beach ends and where the lake begins. So, your best bet is to stay at the “base of the first sand dune or further inland.”

You can find the source of this story’s featured image here!

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