Archaeologists discovered 'elaborate' details of a complete ancient Roman city without digging
https://edition.cnn.com/2020/06/08/world/ancient-roman-city-radar-scn/index.html
Researching ancient cities without digging would be a key for development of archaeology. It means that we can learn where should be digged and where should not be digged. It will contribute to reduction of researching time and preventing destruction of ruins by digging.
