After Sunset. Motif from the Archipelago Gottfrid Kallstenius (1861-1943)

The picture has something of this: tree, cave, environment, rock, people, daylight, park, landscape, water, subway system, invertebrate, wood, outdoors, wear, geology.
Perhaps it’s a painting of a cliff with trees on top of it and a body of water in the foreground, with a blue sky in the background.