Nicolaes Pietersz. Berchem – Shepherds beside Roman Ruins Mauritshuis

The picture has something of this: people, water, recreation, group, mammal, river, seated, motion, man, cave, cavalry, two, landscape, rock, woman.
Perhaps it’s a painting of a man sitting on a horse next to a river with a bunch of animals in front of him and a dog on the other side of the water.