It borders: The geography department on 25 de Mayo this characterized by mountains of escaza height, which belong to the system of Sierras Pampeanas.

It also highlights the drains and rivers Bermejo Desaguadero River, giving rise to small swamps, (Lagoons Guanacache), in the southern province of limiting the Mendoza The climate is characterized by high aridity, with high temperatures in the summer of 35 °C, when the absolute reach 45 °C, low rainfall and a large thermal daily.

Santa Rosa (department head) and Casuarinas are the major urban centres that concentrate the most densely populated.

In rural landscapes, with fewer poiblación, in addition to engaging in agricultural activity, stressing the development of a variety of crafts as a means of expression and livelihood.

The fruit, melon watermelon pear quince Damascus and peach, seeds and pastures are other crops that are made in the department to provide the remaining percentage.