santiago del estero
provincia (province), north-central Argentina. It is located mostly at the southwestern margins of the vast Gran Chaco lowland plains, but it also extends onto the Andean piedmont in the far west. The province has a dry, subtropical climate with seasonal (summer) rains. Thorn scrubs and clusters of low quebracho trees typify the Gran Chaco area, while saline marshes and lakes dominate the south and southwest. The (perennial) Dulce and (seasonal) Salado rivers discharge from outliers of the Andes onto the plains of Santiago del Estero, diagonally draining the province from the northwest to the southeast
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