In September, Sarah-Jane Gibbon and Dan Lee, of the University of the Highlands and Islands Archaeology Institute, completed a geophysics survey of the Wirk, Rousay, Orkney.
The goal was to better understand the nature and date of the Wirk, which has variously been interpreted as a 12th century Norse Castle, a hall-house tower, a defensive church tower and a 16th century tower and range.
The survey was funded by the Castle Studies Trust and carried out by the Orkney Research Centre for Archaeology (ORCA).
Find out what the results revealed here.
