Koekkoek, Barend Cornelis – Landschap bij opkomende regenbui, 1825-1829 Rijksmuseum: part 4

The picture has something of this: landscape, outdoors, sky, daylight, tree, mountain, hill, nature, grass, grassland, cropland, scenic, summer, environment, agriculture, wood, fair weather, rock.
Perhaps it’s a painting of a herd of sheep grazing in a field with a man on a horse in the foreground and a man.