Grinding stone (IMAGE) Aarhus University Caption One of the 14 grindings tones that archeologists found while excavating a 5,500 years old settlement on the Danish island Funen. A new study reveals that the stones were not used to grind cereal grains. Credit Niels H. Andersen, Moesgaard Museum Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. License CC BY-NC 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.