The Red River (known locally as Río Rojo) in the Vinicunca area of the Cusco region in Peru is a breathtaking natural wonder known for its vibrant red color, which is caused by a high concentration of iron oxide and other mineral-rich sedimentary rocks. This unique phenomenon is a result of the breathtaking Andean landscapes surrounding Vinicunca, also known as Rainbow Mountain or Montaña de Siete Colores, and the Red Valley. During the rainy season, rain-induced soil erosion washes mineral-rich sediment into the river, creating its distinct red hue.