Koske is a cave known for its rock-painting, located on the Mediterranean coast, in Calanque of Morges, near Marseille, France, not far from Cape Morges. The entrance to the cave is located under water at a depth of 37 meters, which is explained by a significant increase in the level of the Mediterranean Sea in the Paleolithic era. It was discovered in 1985 by diver Henri Cosque. He crossed the underwater tunnel only 6 years later, in 1991. In the summer of 1992, access to the cave was limited, after the death of three amateur divers in a submarine tunnel.