Mountainous Landscape with a Waterfall Louis Belanger (1756-1816)

The picture has something of this: water, landscape, waterfall, rock, river, outdoors, rainbow, mountain, nature, geology, motion, environment, volcano, mist, tree, daylight, scenic.
Perhaps it’s a painting of a mountain landscape with a river running through it and a castle on top of a hill in the distance, with a few people in the foreground.