Two photographers film an amazing natural phenomenon on a frozen lake!

Lake Superior is the largest freshwater lake in the world by surface area, second only to the Caspian Sea which is actually considered to be a salt water lake. When the cold winter winds blow fiercely and continuously, lowering the temperatures to freezing and below, a remarkable phenomenon called "ice-stacking" occurs on the surface of the lake.

This happens when sheets of ice shatter like glass and are then pushed up against and under each other by the intensely cold powerful winds. This particularly appealing and mesmerizing phenomenon was filmed by Gary Fiedler and Dawn LaPointe, two photographers who happened to be on the shores of Lake Superior.