Located in northern Argentina and flanking the Rio Grande River, the UNESCO-listed Quebrada de Humahuaca is a narrow mountain valley known for its mesmerising rock formations and its indigenous Quechuan villages. The Hill of the Seven Colours (Cerro de los Siete Colores) is a rainbow masterpiece, while the limestone formation called Serrania de Hornocal presents a sculpture of triangular-shaped striped rockfaces. The desert valley holds evidence of life dating back 10, 000 years, from early hunter-gatherer tribes to pre-Hispanic communities, Incan culture, Spanish colonizers, and into the 20th century. The villages of Quebradea are filled with ancestral roots, as the indigenous peoples of the area still practise the same rites, festivals, art, music and agricultural techniques as they did hundreds of years ago, making this a unique place to experience traditional culture firsthand.