The Summer Camp of the Regiment of Nizhegorodsky Dragoons near Karagach Grigori Grigorevich Gagarin (1810-1893)

The picture has something of this: cavalry, people, group, mountain, many, seated, mammal, recreation, landscape, group together, herder, transportation system, tent, man, crowd, road, outdoors.
Perhaps it’s a painting of a group of people and horses in a mountainous area with a mountain in the background and a crowd of people in the foreground.