A giant slow-turning ice disc, measuring approximately 91m (298ft) wide, has formed in the Presumpscot River in the city of Westbrook, Maine. The captivating natural oddity has drawn comparison to an alien spacecraft, a carousel and the Moon.
The giant spinning ice-disc first captured the attention of locals and social media following a Facebook post from the city’s account. Tina Radel, marketing and communications manager for Westbrook, said the ice disc has been rotating counter-clockwise.
“It’s pretty wild to look at,” Doug Bertlesman, a local web developer, told The Portland Press Herald. “It’s certainly not every day that you can watch a spinning circle of ice in the river.”
On Tuesday, Westbrook officials posted a drone video with a full view of the ice disc. Researchers believe ice discs spin because of temperature changes in the water, creating a vortex underneath. The movement chips away the edges, creating its circular shape.