Ice was heard cracking on the shore of Lake Superior on Saturday, April 5, as sunlight glistened off the frozen coastal area. Cheryl Koval filmed on a clear day from Ashland, Wisconsin. Koval said the ...

The illusion is called a "superior mirage" — a phenomenon where shifting temperatures over the water bends light waves so people ... over the cold or even frozen lake, according to Milwaukee ...

The cold temperatures mean "ice waves" form on the shoreline. Produced by Claudia Romeo More from UK Lake Baikal in Siberia is the oldest and deepest freshwater lake in the world. It is frozen for ...