> They do happen in the wild. There are snow circles, and there
> are ice circles. Look little further down this board you will
> see snow circles. Simple google search will give you ice
> cirlces and wild circles.
I have seen the ice circles that form in rivers. Are those the one's you're talking about? They're not mysterious at all, being formed by changing water temperatures and the currents below. Used to happen once in a while in a stream in the town I lived in as a kid.
I'll look around for something on snow circles. I do like to look at crop art formations, regardless of their origins.