Deer Stone (IMAGE) Max Planck Institute of Geoanthropology Caption A horse skull placed next to a deer stone in central Mongolia. Horse skulls are revered by modern herders, as are deer stones -- this one has been decorated with a ceremonial blue prayer scarf. Credit William Taylor Usage Restrictions This image may only be used in the context of reporting on this publication and with appropriate credit information. License Licensed 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.