Arcadian Landscape with Apollo Якоб Филипп Гаккерт (1737-1807)

The picture has something of this: tree, nature, landscape, outdoors, water, sky, mountain, rock, wood, park, summer, grass, scenic, daylight, environment, flora, leaf.
Perhaps it’s a painting of a group of people and animals in a wooded area with a mountain in the background and a river running through the center of the painting.