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Cake day: July 15th, 2023

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  • “I was on something like page 16 of Google search and found a radar survey done by a Mexican organisation for environmental monitoring,” explains Luke Auld-Thomas, a PhD student at Tulane university in the US.

    It was a Lidar survey, a remote sensing technique which fires thousands of radar pulses from a plane and maps objects below using the time the signal takes to return.

    But when Mr Auld-Thomas processed the data with methods used by archaeologists, he saw what others had missed - a huge ancient city which may have been home to 30-50,000 people at its peak from 750 to 850 AD.

    the full section on that. he was looking for the lidar data to analyze.

    I’m not sure why they didn’t just ask the group doing the lidar sweeps for the data, though. I find it hard to believe they’d tell an archeologist ‘no’ for some reason.