Jean-Baptiste Pillement – Shepherds Resting by a Stream National Gallery of Art (Washington)

The picture has something of this: landscape, tree, mountain, outdoors, rock, water, sky, daylight, nature, sunset, dawn, volcano, scenic, people, hill, river, fog, environment.
Perhaps it’s a painting of a group of people sitting on a rock next to a body of water with a waterfall in the background and a castle in the distance.