Layered colorful mountain rocks, Serrania de Hornocal, Humahuaca, Jujuy, Argentina

Hikers exploring Serrania de Hornocal, Humahuaca, Jujuy, Argentina

Hikers at Serrania de Hornocal, Humahuaca, Jujuy, Argentina

Serrania de Hornocal mountain range, Humahuaca, Jujuy, Argentina

Patterns of colorful mountains, Serrania de Hornocal, Humahuaca, Jujuy, Argentina

Aerial view of Serrania de Hornocal mountain range, Humahuaca, Jujuy, Argentina

Striped red rocks among cactus, Serrania de Hornocal, Humahuaca, Jujuy, Argentina

Striped red rocks, Serrania de Hornocal, Humahuaca, Jujuy, Argentina

Winding road beneath sunset sky, Serrania de Hornocal, Humahuaca, Jujuy, Argentina

Layered mountains, Serrania de Hornocal, Humahuaca, Jujuy, Argentina

Silhouette of tourists at sunset, Serrania de Hornocal, Humahuaca, Jujuy, Argentina

Iconic rock formation Serrania de Hornocal in the canyon Quebrada de Humahuaca. The Quebrada is listed as UNESCO world heritage site. South America, Argentina, November