Weeks Edwin Lord Powder Play City of Morocco outside the Walls Edwin Lord Weeks (1849-1903)

The picture has something of this: people, cavalry, mammal, group, seated, man, camel, herder, wear, transportation system, race, motion, veil, many, competition, horse, cattle, vehicle, recreation.
Perhaps it’s a painting of a group of people riding on the backs of horses in front of a crowd of onlookers and onlookers.