The cave of Les Trois Frères communicates with Enlène through a 65 m long tunnel. While parietal art is practically absent at Enlène, it is abundant at Trois-Frères. Most obvious are numerous extremely delicate and fragile Magdalenian engravings. They are often in large groupings on the walls, around the principal themes of Bison, Horse and Reindeer. The painted and engraved figure of the Sorcerer is universally known and is one of the most enduringly popular prehistoric art images.

At the end of the cave certain figures are undoubtedly in an earlier style, but up to now, no archaeological argument, such as the discovery of a type tool or a direct dating, has confirmed this.