I cant remember the name of it, but theres a name for the natural occurance of these. I would say all the ones you see on ice or water are natural
while circles in snow have different properties.
I have seen the ones on ice myself.
I would not link them to any alien activity whatsoever, but thats just my opinion.
Interesting find, but they look man made to me. Just the problem of no tracks are curious. Anyways, crop circles lost my interest a while ago when
I realized the eveidence of Aliens & UFO's have always been here.
Definitely man made and naturally occuring. The photos are good, but the circles aren't that impressive. There's no complex geometry like what you
see in crop formations.
I searched a while back wondering if circles were ever formed in snow and couldn't find anything, but it looks like it does occur. Probably a natural
phenomenon and a couple man made, but you would catch me out on that thin ice with a blow torch.