Giant ice boulders weighing up to 50 pounds washed ashore from Lake Michigan as plummeting temperatures, heavy snow, strong winds and lashing rain hit the Midwest state on January 5. The boulders form when broken chunks of ice tumble in waves created by strong winds. The tumbling forms the ice into spheres. Photographer Joshua Nowicki captured this footage of the ice boulders on the shore of Silver Beach in Saint Joseph, Michigan. Credit: YouTube/Joshua Nowicki