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  • Impact of pre-Columbian “geoglyph” builders on Amazonian forests 

    Watling, J; Iriarte, J; Mayle, FE; Schaan, D; Pessenda, LCR; Loader, NJ; Street-Perrott, FA; Dickau, RE; Damasceno, A; Ranzi, A (National Academy of Sciences, 2016)
    Over 450 pre-Columbian (pre-AD1492) geometric ditched enclosures (‘geoglyphs’) occupy ~13,000 km2 of Acre state, Brazil, representing a key discovery of Amazonian archaeology. These huge earthworks were concealed for ...