Besides the curses monuments, the scan found previously unknown structures, such as a hill fort from the Bronze Age and medieval ring forts. It's a long settled area, so finding something new must have been exhilarating. Since these were built during the Neolithic, there were no metal tools, and they would have likely used wooden shovels. That, according to O'Driscoll, who once again told Live, it shows just how much resources, time and effort went into building them