(IMAGE) Max Planck Institute of Geoanthropology Caption Copper Age collective burial of Camino del Molino (Caravaca de la Cruz, Murcia), where a total of ~1300 individuals were buried between 2900-2300 BCE. The image shows the last burial layer, dated between 2500-2300 BCE, from which six individuals have been analysed. Credit Universidad de Murcia. Photograph by Francisco Ramos Usage Restrictions Use of images is limited to editorial coverage of the current peer-reviewed publication. Any kind of commercial use (including, in particular, the exploitation of images by means of sale or incorporation in image databases or image catalogues) as well as any promotional use/use for merchandise purposes, disclosure to third parties or granting of related rights to third parties is expressly not permitted. License Original content 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.