[4][5] The National Indigenous People Foundation (FUNAI) operates in this area through the "Cacoal" Regional Coordination[2] and the Guaporé Ethnoenvironmental Protection Front (FPE-Guaporé).

[1][7][8] Pimenteiras do Oeste accounts for the largest portion of the region's land distribution, with 3,980.16 hectares (9,835.2 acres), which represents 49.32% of the total area.

[7][8][9] The region is located in the Madeira River watershed and is part of the Amazon biome, with vegetation consisting of semideciduous forest (64.81%) and savanna (35.19%).

[1][6] Indigenous land regularization occurs when the region is permanently inhabited, is a place for physical-cultural reproduction, and is also an area for productive activities.

The children of small rural producers from Colatina, Espírito Santo, they settled in the Amazon in 1973, seeking a new area for cattle ranching.

[19] The actions occurred in partnership with various agencies: the Army, the Federal Police, the National Indian Foundation (FUNAI), and the Instituto Brasileiro do Meio Ambiente e dos Recursos Naturais Renováveis (IBAMA).