image: Bristol researchers remove samples for dating from Tito Bustillo Cave, Spain. This image relates to a paper that appeared in the June 15, 2012, issue of Science, published by AAAS. The paper, by Alistair Pike at the University of Bristol in Bristol, UK, and colleagues was titled, "U-Series Dating of Paleolithic Art in 11 Caves in Spain." view more
Credit: Image courtesy of Rodrigo De Balbín Behrmann