Argentina 2019 National Parks
Sierra de las Quijadas National Park covers a vast, desert-like area in the San Luis province. It is known for Potrero de la Aguada, a natural amphitheater framed by red sandstone cliffs. The rock formation in this basin comprises mainly of Early Cretaceous aeolian, fluvial, and lacustrine sediments.
El Leoncito National Park is located in the province of San Juan, at the foothills of the Cordillera de la Ramada. The continental crust of this Precordillera terrane broke away from Laurentia and joined Gondwana during Cambrian-Ordovician time.