We need a compass and a pencil to draw a circle, but nature only needs a whirlpool to create a perfect circle of ice.
Roy Jefferies accidentally saw an ice circle about 3 meters in diameter moving on the Otter River near the town of Honiton, in the English county of Devon, while walking in the morning. Similar circles have appeared in the Arctic, Scandinavia and Canada, but this is the first time people have seen ice circles appear in the land of fog.
They appear in curves in rivers, where fast-flowing water creates enough vortex force to break up an ice floe and cause it to spin. As the circle rotates, it grinds into the surrounding ice creating a perfect circle.
Roy Jefferies watched the ice circle on the Ottor River, about 2 meters from the shore and filmed for more than 4 minutes.
An ice circle found in Russia is located among many smaller circles.
Ice circle in a lake in Ontario, eastern Canada.
An ice circle in Michigan, USA.
