Remarkable 3D images of Derry’s historic Walls have been produced as part of a unique Irish history project.
The work has been carried out by the Dublin-based Discovery Programme, which researches Irish archaeology.
It’s understood the 3D models that have been created will be of use for gaming, TV and films, as well as for providing imaging for exhibitions and websites.
The full mile-long circuit of the city’s famous ramparts - built between 1613 and 1618 - were scanned to a precision of 1cm.
Rob Shaw, a geo-surveyor on the project, said: “We surveyed the walls using a terrestrial laser scanner and carried out the work over three visits, and a total of three solid weeks.
“You do leave yourself a target for curiosity - people wonder what you’re doing - and traffic coming through the gates made it difficult, too.”
Mr. Shaw says there is also an engineering element to creating the 3D models of the walls.
“If the walls were to get damaged in any way - say if a truck hit part of one of the gates - we have a record of the walls for engineers so they can use that as a basis for carrying out repairs,” he said.
“Heritage can be very fragile, precious monuments can be very fragile, and that is one of the reasons why we’ve done this.”
The models have already been used by teachers in history lessons across Ireland.