Sometimes associated with crop circles, they are actually formed thanks to natural whirpools.
http://forgetomori.com/2009/science/ice-circles-explained-kind-of/ Really kewl video at the end of the page. T
Sometimes associated with crop circles, they are actually formed thanks to natural whirpools.
http://forgetomori.com/2009/science/ice-circles-explained-kind-of/ Really kewl video at the end of the page. T