For years the hill-fort known as the Mound of Down in Ireland has been hidden because of the trees growing across its surface. Now it is being cleared of those trees to expose the fortifications.
The enclosure is defined by a massive bank and ditch that encircles what was once a drumlin island in the Quoile Marshes.
Although the site has yet to undergo archaeological excavation, it is thought that the large earthwork on the mound is a pre-Norman fortification.
It is most likely to be a royal stronghold of the Dál Fiatach, the ruling dynasty of this part of County Down in the first millennium AD.
Story: BBC News | Photo: BBC News