The ice age artwork within the Chauvet Cave of southeastern France is carbon 14 dated by the charcoal of wood burned there when the artwork was created, said to be twenty to thirty thousand years old, but the 450 extinct volcanoes of the Central Massif tell the tale that during the Ice Age much carbon 12 in the form of CO2 billowed from those cones which diluted so to speak the amount of carbon 14 in the atmosphere, thus greatly exaggerated dates for the charcoal from wood harvested during the Ice Age.
