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

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

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

Sedimentary rocks, Argentina, on the Andean Altiplano (Puna, high plateau), the Andes Cordillera

Sedimentary rocks, Argentina, on the Andean Altiplano (Puna, high plateau), the Andes Cordillera

Sedimentary rocks, Argentina, on the Andean Altiplano (Puna, high plateau), the Andes Cordillera

Sedimentary rocks, Argentina, on the Andean Altiplano (Puna, high plateau), the Andes Cordillera

Sedimentary rocks, Argentina, on the Andean Altiplano (high plateau), the Andes Cordillera

Sedimentary rocks, Argentina, on the Andean Altiplano (high plateau), the Andes Cordillera

Sedimentary rocks, "Quebrada de Humahuaca" valley, Jujuy, Argentina, on the Andean Altiplano (Puna, high plateau), the Andes Cordillera

Sedimentary rocks, "Quebrada de Humahuaca" valley, Jujuy, Argentina, on the Andean Altiplano (Puna, high plateau), the Andes Cordillera

The Andes: the Uyuni Salar, largest in the world, Bolivia

Volcanic bombs, Jujuy, Argentina, on the Andean Altiplano (Puna, high plateau), the Andes Cordillera

Volcanic rock, Chile, on the Andean altiplano (high plateau), the Andes Cordillera

Canoes, Gran Sabana, Venezuela

Traveling in the Gran Sabana, Venezuela