SearchSlowly spinning in a counter-clockwise direction, there’s a rare natural phenomenon is Maine. It is a gigantic ice disk measuring approximately 298 Ft (90m) across and it is sitting in the Presumpscot River in the Maine town of Westbrook.
As it slowly rotates, its edges grind against the shore so that from the air, you can see a perfect ice circle.
This rare phenomenon occurs where there is slow moving water in areas of very cold temperatures. Ice forms on top of the water and it grows and collects more ice. It slowly keeps in motion as the current in the water moves it along very gently.
