Ludwig Richter (1803-1884) – Lake in the Riesengebirge Alte und Neue Nationalgalerie (Berlin)

The picture has something of this: mountain, landscape, water, volcano, rock, river, valley, lake, nature, outdoors, tree, sunset, scenic, dawn, smoke, hill, island, sky.
Perhaps it’s a painting of a mountain scene with a man and a dog in the foreground and a body of water on the other side of the mountain.