[TheWasteLand]

Neat. The fact that they’re circles would imply some sort field. After all, everyone knows aliens prefer triangles.

[Brian S. Fitzgerald]

Meteor impact sites that have since been filled in.

[goat granny]

Now if those rings show up in your lawn, they are called fairy rings and are caused by fungus......Sometimes they even cross each other and are always rings......Use to tease a neighbor about his fairy rings in the lawn..took him a couple of years to get rid of them....FYI

But of course they were not as large as these.....