"Un Fort" is a lithograph by French artist Paul Gavarni, known for his satirical social commentary and keen observations of Parisian life in the 19th century. The work exemplifies Gavarni's mastery of the lithographic medium, which allowed for the expressive line work and tonal variations characteristic of his style. Like much of his output, the piece likely captures a humorous or ironic moment of contemporary social interaction, reflecting his talent for witty social critique through visual narrative.