Sadak in Search of the Waters of Oblivion John Martin (1789-1854)

The picture has something of this: cave, rock, canyon, water, geology, people, landscape, light, river, sandstone, cavern, park, subway system, waterfall, outdoors, scenic.
Perhaps it’s a painting of a rocky landscape with a waterfall in the foreground and a group of people standing on the other side of a body of water.