GeoGraph - photograph every grid square

The combine harvester feeds in the wheat, cutting the stalks near their base, and then separating the grain from the chaff and the straw. The grain is carried into a storage tank and the rest is expelled from the back with a lot of dust in tidy lines ready for the baler. The arm of the combine is folded back against its body on the left and moves into position when emptying the grain into a trailer.