Along the Nile Frederick Goodall (1822-1904)

The picture has something of this: mammal, cavalry, water, camel, seated, outdoors, horse, sand, desert, animal, sky, nature, vacation, people, two, sunset, group, summer.
Perhaps it’s a painting of a man riding on the back of a camel next to a body of water and a group of people standing on the side of the water.