A hedgehog and her hoglets scurry across the packed-dirt parking lot where University of Huddersfield sound archaeologist Rupert Till and his team have gathered around their van. They chat casually as they check their gear: headlamps operational, mobile phones charged, helmets properly buckled. It’s a crisp fall day in the Ariège Pyrenees of southwestern France, an area renowned for its high concentration of caves containing paintings and engravings from the Neolithic and earlier periods. But Till and his colleagues aren’t here for the art. The team hikes up the narrow…
