It was created in 1954 in order to protect a sample of the Eastern Chaco, composed mainly of warm lowlands, with an annual summer rainfall between 750 and 1,300 mm.

Forests of quebracho colorado chaqueño (Schinopsis balansae) were once located in the north of Santa Fe and the western half of Chaco, and had entered the northeast region of the province of Corrientes.

The area harbors several environments: scrubland, savanna, swamps, and small lakes.

Elsewhere there are armadillos, South American tapirs and plains viscachas, as well as birds (more than 340 species).

Indigenous communities of the Mocoví and Toba peoples are found in the protected area.