Archaeologists have spent almost 30 years studying Finlaggan to gain a better understanding of its place in the kingdom of the Lords of the Isles, and the site’s earlier history.
Remains of a castle were uncovered and dated to the 12th and 13th centuries, before the lords rose to power.
The castle had a rectangular stone tower similar to a keep, a type of heavily fortified stronghold found in castles in Carlisle, Bamburgh and Lancaster in England.
The tower had living quarters, courtyards, kitchens, a great hall where feasting took place and a chapel with a burial ground.