Sheets of Ice Pile Onto Shoreline of Frozen Lake Superior
Sheets of ice pilled up along the shoreline of Lake Superior in Ashland, Wisconsin, on April 29.
Photographer Cheryl Koval, who lives on the shore, captured the sight, sharing a number of videos on her YouTube channel that day.
The United States Geological Survey says ice shoves are caused by changes in water levels, strong winds, and temperature fluctuations. Credit: Cheryl Koval via Storyful
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