Théodore Rousseau (1812-1867) – Swamp in the Landes Part 4 Louvre

The picture has something of this: water, landscape, outdoors, cattle, nature, dawn, wildlife, tree, lake, grass, sky, sunset, river, mammal, bird, reflection, pool.
Perhaps it’s a painting of a herd of cattle grazing on a lush green field next to a body of water with trees and a distant sky in the background.