Clearing of Skeleton (IMAGE) Aarhus University Caption One of the conclusions so far is that during a period of crisis in the early 3rd century BC a large proportion of the rural population was killed following a military invasion. The skeletons of these people can be found just 40 cm beneath the surface of the soil in a number of housing structures which the Aarhus archaeologists have excavated. Credit Vladirmir Stolba 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.