Upper Paleolithic artists decorated Lascaux roughly seventeen thousand years ago during the Magdalenian period. The cave’s chambers contain hundreds of painted animals and many more engravings, signs, and partial figures. Horses dominate, alongside aurochs, bison, deer, ibex, and a few predators. Artists used mineral pigments, brushes, pads, blowing techniques, engraving tools, and the natural relief of the limestone to create movement and volume. The cave was not an ordinary habitation site; its difficult spaces and concentrated imagery suggest repeated symbolic or ceremonial activity whose precise meaning remains unknown.

The Hall of the Bulls presents immense aurochs among overlapping animals, while the Axial Gallery, Nave, Apse, and other spaces contain different combinations of painting and engraving. Scaffolds or ladders allowed work high on walls and ceilings. The Shaft includes a rare humanlike figure near a wounded bison, a rhinoceros, and a bird-topped staff. Modern names divide the cave into galleries, but Paleolithic visitors may have understood its darkness, sound, surfaces, and images as a connected sensory environment rather than a sequence of framed artworks.

Four teenagers—Marcel Ravidat, Jacques Marsal, Georges Agnel, and Simon Coencas—entered the cave in September 1940 after investigating an opening near Montignac. Abbé Henri Breuil and other specialists soon authenticated the paintings. Lascaux opened to the public in 1948 and attracted large crowds. Visitors altered the cave’s temperature, humidity, and carbon-dioxide balance, while lighting and air circulation encouraged microorganisms. Condensation and green growth appeared on painted surfaces, showing that public access was changing the environment that had preserved them for millennia.

French authorities closed the original cave in 1963. Engineers installed climate controls and treated biological growth, but later outbreaks, including fungal contamination in the early 2000s, demonstrated the risks of intervention as well as neglect. Access is now limited to conservators, scientists, and closely controlled official visits. Sensors track temperature, moisture, gases, and microbiology. Decisions must protect both pigments and the cave ecosystem, whose equilibrium can respond unpredictably to equipment, chemicals, people, and climate outside.

Facsimiles provide public access without exposing the original. Lascaux II opened in 1983 with reproductions of major galleries, and the international touring Lascaux III followed. Lascaux IV, opened in 2016 at the International Centre for Cave Art, recreates the complete decorated cave through scanning, digital modeling, hand-applied surfaces, and replicated pigments. UNESCO included Lascaux within the Vézère Valley sites in 1979. The replicas are not substitutes pretending to be ancient fabric; they are preservation tools that document the cave’s recorded state and allow millions to study art whose survival now depends on remaining unseen.