The Grotte du Renne (French for "Reindeer's cave/grotto") is one of the many caves of the archaeological site of the Middle/Upper Paleolithic period at Arcy-sur-Cure in France. It contains Châtelperronian lithic industry and Neanderthal remains. It was once taken to provide the best evidence that Neanderthals developed aspects of modern behavior before modern humans. Radiological dating now shows mixing of later human artifacts with Neanderthal remains.[2]