The Quilombos do Médio Ribeira Environmental Protection Area (APA) is divided between the municipalities of Barra do Turvo (2.69%), Eldorado (40.84%) and Iporanga (56.47%) in the state of São Paulo.

[1] The APA forms part of the Serra de Paranapiacaba Mosaic, which has over 120,000 hectares (300,000 acres) and contains the largest remaining area of Atlantic Forest in Brazil.

[2] The quilombolas of the Ribeira Valley were escaped or free slaves who settled in the area, mainly in the 18th century, and intermarried with the local people.

[3] Law 10.850 of 6 July 2001 altered the boundaries of the Jacupiranga State Park to exclude the quilombola communities of Nhunguara, Sapatu and André Lopes, and the Intervales State Park to exclude the quilombola communities of Pilões, Maria Rosa, São Pedro, Ivaporunduva and Pedro Cubas.

Fauna include cougar (Puma concolor), black-fronted piping guan (Pipile jacutinga) and southern muriqui (Brachyteles arachnoides).