view inside cave (IMAGE) University of Göttingen Caption The Einhornh&ouml;hle (Unicorn Cave), Blaue Grotto. In the Middle Ages, animal bones from the ice-age were found, which treasure hunters mistook for unicorn bones and sold as possessing medicinal properties, hence the name "Unicorn Cave". Since the discovery of the first stone tools from the Neanderthal period in 1985, archaeo-palaeontological excavations have been carried out in and in front of the cave. Credit https://commons.wikimedia.org/wiki/File:EHH-Wiki001_C_GUfeV.JPG (CC BY-SA 4.0) Usage Restrictions None 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.