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A comment on Ancient Maya city – Lidar technology unearthed tropical megapolis [at] Calakmul. Parent comment

Re:Ancient Maya city – Lidar technology unearthed tropical m... by withinboredom on Saturday October 29, 2022 @03:01AM (#33381709)
Huh. I wonder if they used some kind of signaling to communicate with each other back in the day?
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