Majes extends through a fertile valley in the Arequipa Region of southern Peru, shaped by the Majes River, part of the Colca–Majes–Camaná river system, as it descends from the western Andes toward the Pacific coast, creating a striking contrast between irrigated farmland and the surrounding arid desert landscape. In contrast to the surrounding arid landscapes, the valley is sustained by river water and large-scale irrigation projects, transforming desert terrain into productive agricultural land. The region has been inhabited since pre-Columbian times, as evidenced by nearby archaeological sites and ancient petroglyphs, most notably those of Toro Muerto, one of the largest collections of rock art in South America. Today, Majes is known for intensive farming, including the cultivation of rice, maize, alfalfa, and other crops, supported by the Majes–Siguas irrigation project, one of Peru’s most ambitious agricultural developments. The valley lies at a relatively low elevation compared to the Andean highlands, giving it a warmer and more stable climate. Beyond agriculture, Majes reflects a long history of human adaptation to river valleys in otherwise inhospitable environments. It stands as a clear example of how water management has shaped settlement, economy, and landscape in southern Peru.