Limits of the municipalities of Barreiras and Formosa do Rio Preto. This region is known as the "Ring of Soy", which brings together several farms, processors and soybean distribution centers. The "ring" passes through the municipalities of Luís Eduardo Magalhães, Riachão das Neves, Formosa do Rio Preto and Barreiras, in the Cerrado region in the western part of Bahia state.