What do you mean by "where and when the data was collected"? As the article says, the photos are from the 60s and 70s in Iraq and Syria. The source of the pho

What do you mean by "where and when the data was collected"? As the article says, the photos are from the 60s and 70s in Iraq and Syria. The source of the photos was the CORONA and HEXAGON satellites: https://www.cambridge.org/core/journals/antiquity/article/wall-or-a-road-a-remote-sensingbased-investigation-of-fortifications-on-romes-eastern-frontier/8FE59FB0D5476EA329614EEC6DC414FD https://www.cambridge.org/core/journals/antiquity/article/wa... The journal article cites its sources which you can use to understand more: https://www.tandfonline.com/doi/full/10.1080/00934690.2020.1713285 https://www.tandfonline.com/doi/full/10.1080/00934690.2020.1... The data has been available for quite a while, but available is different from usable: > While challenges involved in spatially correcting these unusual panoramic film images has long served as a stumbling block to researchers, an online tool called “Sunspot” now offers a straightforward process for efficient and accurate orthorectification of CORONA, helping to unlock the potential of this historical imagery for global-scale archaeological prospection. With these new opportunities come significant new challenges in how best to search through large imagery datasets like that offered by CORONA.