[1] It covers all or part of the municipalities of Bom Jesus, Santa Filomena and Baixa Grande do Ribeiro in the state of Piauí.

The top of the plateaus is covered by typical cerrado vegetation, while there is gallery forest in the valleys.

Fauna is very varied, and includes species such as maned wolf (Chrysocyon brachyurus), pampas deer (Ozotoceros bezoarticus), giant anteater (Myrmecophaga tridactyla), bearded bellbird (Procnias averano), hyacinth macaw (Anodorhynchus hyacinthinus), golden parakeet (Guaruba guarouba), armadillo and peccary.

[3] The Ecological Station is a "strict nature reserve" under IUCN protected area category Ia.

[2] Specific objectives are to protect samples of cerrado ecosystems, springs, streams and rivers forming the Gurgueia and Parnaíba Basins.