Johann Georg von Dillis – Et in Arcadia Ego National Gallery of Art (Washington)

The picture has something of this: tree, nature, landscape, outdoors, leaf, park, wood, grass, summer, placid, daylight, environment, large, flora, scenic, lush, sky, idyllic.
Perhaps it’s a painting of a large tree in the middle of a field with cows grazing in the foreground and a house in the distance in the background.