Jean-Baptiste-Camille Corot, French, 1796-1875 – Morning on the Estuary, Ville d’Avray Philadelphia Museum of Art

The picture has something of this: tree, fog, wood, landscape, outdoors, nature, mist, dawn, leaf, water, fall, branch, grass, sky, weather, environment, park, river.
Perhaps it’s a painting of a man on a horse in a wooded area with a castle in the distance.