The Amazonian rainforest was transformed over two thousand years ago by ancient people who built hundreds of large, mysterious earthworks.
Findings by Brazilian and UK experts provide new evidence for how indigenous people lived in the Amazon before European people arrived in the region.
The ditched enclosures, in Acre state in the western Brazilian Amazon, were concealed for centuries by trees. Modern deforestation has allowed the discovery of more than 450 of these large geometrical geoglyphs.
The function of these mysterious sites is still little understood -- they are unlikely to be villages, since archaeologists recover very few artefacts during excavation. The layout doesn't suggest they were built for defensive reasons. It is thought they were used only sporadically, perhaps as ritual gathering places.
The structures are ditched enclosures that occupy roughly 13,000 km2. Their discovery challenges assumptions that the rainforest ecosystem has been untouched by humans.
The archaeologists found evidence Amazonians practiced "agro-forestry" by cultivating economically valuable tree species.
(Score: 2) by Immerman on Friday February 10 2017, @04:10PM
Now I'm curious - what sort of "chicken and egg paradoxes" do you see that are solved by assuming that life first emerged on a different planet rather than on this one?
It seems to me that anything that was too unlikely to have happened here would have been just as unlikely to happen somewhere else.
(Score: 0) by Anonymous Coward on Friday February 10 2017, @06:04PM
Now I'm curious - what sort of "chicken and egg paradoxes" do you see that are solved by assuming that life first emerged on a different planet rather than on this one?
It seems to me that anything that was too unlikely to have happened here would have been just as unlikely to happen somewhere else.
It's so simple! There's only one planet here, but there's bazillions of planets out there -- multiplied by that, a one-in-a-million chance becomes an absolute certainty, and "too unlikely" becomes "no problem".