permaculture

[Lawrence London <lfljvenaura@gmail.com>]

‘Mind blowing’ ancient settlements uncovered in the Amazon [Terra Preta II]
https://www.nature.com/articles/d41586-022-01458-9

Mysterious mounds in the southwest corner of the Amazon Basin were once the
site of ancient urban settlements, scientists have discovered. Using a
remote-sensing technology to map the terrain from the air, they found that,
starting about 1,500 years ago, ancient Amazonians built and lived in
densely populated centres, featuring 22-metre-tall earthen pyramids, that
were encircled by kilometres of elevated roadways.