Caves of Gargas
The Caves of Gargas (French: Grottes de Gargas, French pronunciation: [ɡʁɔt də ɡaʁɡas]) in the Pyrenees region of France are known for their cave art from the Upper Paleolithic period - about 27,000 years old. The caves are open to the public.
Cave data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).