Pyroclastic rock, environs of the Galán volcano, Altiplano of Catamarca, Argentina

Rock formation in the 'Quebrada de Cafayate' valley, Argentina

The "Los Castillos" rock formation, in the "Quebrada de Cafayate" valley, province of Salta, Argentina

The Salt Cordillera, in the Atacama Desert, Chile

Rock formation, Bolivia, on the Andean Altiplano (high plateau), the Andes Cordillera

Rock formation on the Andean Altiplano (high plateau), Bolivia, the Andes Cordillera

The Andes: eroded lava rock formation on the Altiplano, Chile

Rock formation in the Moon Valley, in the Atacama Desert, Chile

Rock formation, Argentina, on the Andean Altiplano (Puna, high plateau), the Andes Cordillera

Rock formation, Argentina, on the Andean Altiplano (Puna, high plateau), the Andes Cordillera

Volcano on the Altiplano (Puna) of the province of Jujuy, Argentina

The Laguna Verde, Licancabur volcano, Bolivia, Andean Altiplano (high plateau), the Andes Cordillera

The Andes: the Licancabur volcano, the Laguna Verde, Bolivia

The Licancabur volcano, Bolivia, on the Andean Altiplano (high plateau), the Andes Cordillera

A salt cave, in a paleo-salar, near Tolar Grande, on the Altiplano (Puna) of Salta, Argentina

A salt cave, in a paleo-salar, near Tolar Grande, on the Altiplano (Puna) of Salta, Argentina