Geographic location (A) and aerial image of the border of the Rio Paranaíba plateau (B), Minas Gerais, south-eastern Brazil (image: Google Earth, 2019). The Rupestrian Savannah fragments have soils with ferruginous concretions (canga) and can be found in the form of continuous crust (C) or in blocks (D). The grey outline on the map represents the state of Minas Gerais and the star is the location of the municipality of Rio Paranaíba.