I first saw this circle in Google Earth. During a trike ride I encountered it by chance and realized it was the one I had seen on my computer. Its meaning is a mystery to me. It appears at the center of this WikiMapia aerial view. Diameter, according to Google Earth, is 65 feet (19.8 m).
In the asphalt area just north of this circle is a similar, fainter circle.
Larry, thank you for reminding me of the need to be vigilant at all times. I shudder to think of the repercussions of a lack of co-incidence. I saw no strange activity. In fact, I saw no activity other than my own, but that could be explained by the day of the week: Sunday. The place was deserted and quiet, which I enjoyed. But I might have been having fun without realizing that something bad could occur at any time.
The google map shows the lot as empty, just as it is in your photo. Coincidence? Did you observe any strange activity? It looks quiet. That is not a good sign.
