Complex sentence: Painted pebbles have been found in large numbers in the cave of Le Mas-d'Azil, Ariège department, France, and are also known from the Pyrenees, south-western and southern France, and southern Italy.
Split into simpler sentences: Painted pebbles have been found in large numbers in the cave of Le Mas-d'Azil, Ariège department, France. These pebbles carry art forms that are known from the Pyrenees, south-western and southern France, and southern Italy.