Bernd 02/24/2021 (Wed) 20:42:52 No.42724 del
(28.67 KB 480x480 american_scientist.jpg)
Here's another article with a bit moar info. Skimmed it through but still needs a proper read on by behalf.
https://www.scientificamerican.com/article/why-some-amazonian-societies-survived-and-others-perished-amid-pre-columbian-droughts/