Uncovering medieval artifacts with the help of GNSS

Norwegian Castle

The Norwegian Institute for Cultural Heritage (NIKU) used a Septentrio GNSS/GPS receiver to record the exact location of every medieval artefact recovered at the Sverresborg Castle site with centimetre-level RTK precision. Eight hundred years ago, as the legend has it, a dispute over the true successor to the Norwegian throne culminated in a corpse being thrown into a well to poison the drinking water. This legend was recently confirmed to be true when a skull was unearthed at Sverresborg in Trondheim, Norway. 

NIKU in action - uncovering medieval artifacts
Photo credit: 2016 (c) Vegard Eggen and NIKU
King Sverre - Photo credit Kulturpunkt.org

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.

Illustrative video from NIKU