https://www.theguardian.com/science/2018/mar/27/lost-amazon-villages-uncovered-by-archaeologists
Provides more evidence for the idea that the pre-contact Amazon basin was densely populated, as discussed in http://soa.org.uk/sm/index.php?topic=1622
The photo looks like the remains you see in Africa of temporary enclosures made of thorned branches.
More indications of agriculture in parts of the Amazon basin, this time very early indeed:
https://www.bbc.co.uk/news/science-environment-52217636
So does that mean we have to extend the start date of some of the lists a little...?