Cave of the Trois-Frères
Cave in France
The Cave of the Trois-Frères is a cave in southwestern France famous for its cave paintings. It is located in Montesquieu-Avantès, in the Ariège département.
The cave is named for three brothers, Max, Jacques, and Louis Begouën, who, along with their father Comte Henri Begouën, discovered it in 1914. Wikipedia