Few know that the peak of this mountain, Cerro El Plomo, was used as a ceremonial site by the Incas in a practice called Capacocha. This ceremony was one of child sacrifices, alongside offerings of gold, silver, and other precious artifacts. Due to the freezing temperatures on the tops of these mountains, the remains from these rituals are typically very well preserved. In 1954, the mummified body of a 9-year-old boy was discovered, now known as the "Plomo Mummy." Without written records, it is unknown what the motivation or intention for this practice was.