Swirling ice disc causes a stir

Ice discs can form because of a current and vortex under ice.

Swirling ice disc causes a stir

A swirling disc of ice on a river in the US state of Maine is drawing onlookers in the heart of winter once again.

The disc has formed in the Presumpscot River in Westbrook.

A handful of dog walkers and onlookers stopped to gaze at the curious ice formation on a chilly Thursday morning around dawn.

It also partially formed in 2020.

Ice discs can form because of a current and vortex under ice.

The ice sheets spin and form into circles.

Officials in Westbrook have cautioned against attempting to go out on the ice disc.

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