Watch: A moon-like ice disc is floating in a US river
Created by unexplained forces or just a natural phenomenon?
A mysterious ice disc is floating in the Presumpscot River in the US city of Westbrook, Maine.
With moon-like appearance, the ice formation has taken people by surprise.
Local media has reported that the disc is spinning and slowly gaining size.
It is about 91 metres wide.
Updated: January 16, 2019 05:35 PM