There's a lake that turns into a giant ice disk - Apparently.
Every winter, a lake in Maine, USA, called the Farrington Lake, forms a giant ice disk that can reach up to 100 feet in diameter. This phenomenon is caused by a combination of cold weather and the lake's unique shape, which creates a self-sustaining current that helps to form the ice disk. The lake's ice disk has been observed for decades, and it's even been documented on camera. According to the Maine Department of Inland Fisheries and Wildlife, the lake's ice disk is a rare but natural occurrence that's been happening since at least the 1970s.