Strange rotating ice disc discovered in Michigan’s frozen river


A Michigan woman on a snowmobiling trip captured video of a bizarre phenomenon: a disc of ice slowly rotating on the surface of a river on December 17, 2016.

The strange rotating ice circle was spotted in the Muskegon River, near the city of Houghton Lake, Michigan.

The video recorder said she had never seen anything like the ice disc in the river before.

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This large disc of ice was recorded by Karla S. Dahms in Michigan’s backcountry. via Karla S. Dahms

Researchers say the ice discs occur when cold air comes in contact with an eddy in the river and the ice forms into a circle, which rotates due to the current it creates by slowly melting.

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