Mushroom Crop Circle ...cognoscere (68)in #cognoscere • 9 years ago It appeared out of nowhere, as though secretly planted by aliens in their quest for universal fungi dominance! #photography #mushrooms #nature #life
Looks like you've got yourself a fairy ring :-) Once upon a time, probably a tree gree in that spot.
http://www.missouribotanicalgarden.org/gardens-gardening/your-garden/help-for-the-home-gardener/advice-tips-resources/pests-and-problems/diseases/fairy-rings/lawn-mushrooms.aspx
Thanks @gardenlady, but I prefer to believe it was really aliens 😱