During the past week, on the shores of Lake Michigan, there were huge blocks of ice the size of a basketball. The weight of some of them reached 35 kilograms. Experts say that something like this happens more than once in ten years, but the emergence of such large balls put them in a deadlock.
Rounded objects are formed gradually and initially are pieces of ice that are rolled back and forth by waves and slowly but steadily increasing in size in cold water.
"The Great Lakes themselves create their own weather," — says an employee of the National Park Sleeping Bear National Lakeshore Lisa Myers.
The Great Lakes are located in North America, the United States and Canada. Lake Michigan — the only one which is entirely in the United States.