Here is a better picture out in the sun. And...while I was busy washing my other cars for the last few hours two new rings popped up on the trunk lid. The battery is in the trunk.
If you look at the picture below you will see the one really large ring. This is the largest ring I've ever seen form. If you look to the left you will see a small one starting. They look like somebody did this with a mechanical object, but then as time goes they grow larger - appearing to add rings/layers like a tree slice.
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