Munduruku indian showing a scorpion during the meeting with researchers and the Federal Prosecution Service about the impacts of the hydro power plant of São Luiz do Tapajós, a major dam planned by the Brazilian government on the Tapajós river, in Pará State. Munduruku leaderships and researchers got together in the “Sage Gathering”, in the Dace Waptu village, indigenous land Sawré Muybu, Para state, Amazon. Two authors from the Independent and Critical Analysis of the Impact Study and Environmental Impact Report (EIA/RIMA, in Portuguese) were there to talk and discuss with the indigenous people and their leaderships. The analysis, launched by Greenpeace in Brazil, was developed by nine researchers who excel in their fields of knowledge, and identified several problems in the project Study, what compromises its efficiency on evaluating the power plant construction - which would be the largest of a series of power plants to be built on the Tapajós river.