This skull and a large part of the skeleton belonged to a man in his late thirties. Carbon dating placed the remains in the same time-period as the saga described above. The site at Sverresborg castle also proved to be a rich source of medieval artefacts. To organize this vast array of information and to make it available for further research, the team from NIKU used GIS (Geographic Information System) to record the exact position of each artefact recovered. Even deep inside the well, the Septentrio smart antenna was able to determine positions with centimeter-level RTK precision.