Race to save undersea Stone Age cave art masterpieces

To reach the only place in the world where cave paintings of prehistoric marine life have been found, archaeologists have to dive to the bottom of the Mediterranean off southern France. Cosquer Cave lies under the sea in a landscape of limestone near Marseilles [Credit: © Luc Vanrell] Then they have to negotiate a 137-meter (yard) natural tunnel into the rock, passing through the mouth of the cave until they emerge into a huge cavern, much of it now submerged. ...