Ice Eggs (Mysterious Of Eggs), Hailuoto Island, Finland

Ice Eggs is a rare weather phenomenon. Thousands of egg-shaped balls of ice have covered a beach in Finland. Experts say it is caused by a rare process in which small pieces of ice are rolled over by wind and water. The "ice eggs" littered an area the length of about one-quarter of a football field and ranged in size from that of an average chicken egg to that of a hefty soccer ball.

Autumn is the perfect time to see the phenomenon, according to Dr James Carter, emeritus professor of geography-geology at Illinois State University, as this is when ice starts to form on the surface of water, creating a form of slush when moved by waves. The core begins to collect ice around it and the swell moves it along the beach, forward and back. A small ball surface gets wet, freezes and becomes bigger and bigger.”