Uncovering the Secrets of Ancient Rock Art Using 'X-Ray Vision' (image) American Chemical Society Share Print E-Mail Caption A portable X-ray device has revealed new insights about the pigments used in rock art without damaging the site. Credit Courtesy of Shumla Archaeological Research and Education Center Usage Restrictions Photo provided courtesy of Shumla Archaeological Research and Education Center. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.