Drones have been called in to help the effort towards saving the Great Wall of China.
The UAVs are able to assess places on the wall which were previously completely cut off.
This means the people working on restoring the 13,000 mile fortification can gain a better understanding of the task before them.
A report carried out by BBC News shows how the drones are being used to evaluate building patterns and find out if there are any structural faults which need to be managed.
Zhao Peng, a Great Wall architect, told the BBC: “Some sections of the wall are very dangerous but using drones we can measure lengths and undulations.”
The report goes on to describe how the drones can provide precise imagery which is helping preserve history in a way they could not have done before.
The team working on the wall is hoping the new and high-tech way to look after the wall will help preserve the wall for generations to come.