Crop Circle?

I was cleaning out old pictures that I had saved on my cell phone and I came across this little gem. This circle is much more pronounced in the winter months but as you can see it's still very obvious. The circle itself is about 20' (twenty feet) in diameter and the line of grass that makes-up the circle is probably around 2' (two feet) wide.

It's also right here in Pocomoke but about 3-4 miles outside of town.

What is it?