Mapping Magnus

Mapping Magnus Geophysics to Commence

Mapping Magnus Gen poster V1 070717

The first phase of the exciting community archaeology and training project, Mapping Magnus, begins on the 25th and 26th July.

Volunteer archaeologists together with a team from the University of the Highlands and Islands Archaeology Institute will be involved in the initial geophysics survey in and around the gardens of Palace Village, Birsay.

Geophysical survey will be used as a prospective tool to investigate key areas within Palace village, providing targets for subsequent excavations, and opportunities for community training and engagement. 3-4 areas will be investigated using magnetometry and earth resistance survey:

  • Magnetometry / Gradiometry measures localized variations in the earth’s magnetic field caused by features in the top metre or so of the ground. The technique is especially suited to locating ditches, pits, pottery and tile kilns, hearths and ovens, ferrous debris, and burnt material.
  • Resistance survey effectively measures the moisture content in the top 0.75m or so of the earth’s surface. It is particularly suited to locating walls and rubble spreads, made surfaces such as yards, and stone coffins or cists. The technique can also be used to locate ditches and pits in areas where gradiometry is not suitable, for example due to the nature of the soils or the presence of large amounts of ferrous material on or beneath the surface.


Further opportunities for community involvement and training in archaeological archive research and desk based assessment is also planned for the first phase of this project. School pupils will also be involved in discovering the exciting history of Birsay when the schools return after their summer holidays.

If you want to get involved contact  Dan Lee at