Don't know about Crop Circles but we found Rock Circles

As a traveller, I had observed many things which I knew would make interesting visuals aerially. One such thing was the rock arrangements to stop water flow in rains and thus increase groundwater levels. When shot with a drone, these arrangements amazing patterns.

Small: A4: 11.69 X 8.27 inches
Medium: A3: 16.53 X 11.69 inches
Large: 2 X 3 feet : 24 X 36 inches