Jean-Baptiste-Camille Corot, French, 1796-1875 – Under Trees, Marcoussy Philadelphia Museum of Art

The picture has something of this: fog, tree, mist, wood, rain, landscape, light, eerie, water, fall, mystery, daylight, outdoors, leaf, backlit, river, rainforest, park, road.
Perhaps it’s a painting of a group of people sitting on a bench in a wooded area with trees and a body of water on the other side of the path.