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A spectacular rotating ice disk formed in a river in Westbrook, Maine, video filmed by the City of Westbrook shows.
Drone video filmed by the City of Westbrook between January 11 and 13 shows the formation on the Presumpscot River, against a backdrop of the city’s snowy landscape.
Ice disks are a fairly rare phenomenon that form as a result of a river’s structure and temperature conditions, according to Chris Horvat, a postdoctoral researcher at Brown University. Credit: City of Westbrook via Storyful