Nearly five centuries ago, high in the Andes Mountains, three children began a journey that would end on the frozen summit of Llullaillaco, a 6,739-meter (22,110-foot) dormant volcano on the border of Argentina and Chile.
They were part of an Inca ritual known as capacocha, a state-sanctioned form of child sacrifice meant to honor the gods, mark important events, or seek protection in times of famine and disaster. In the Inca worldview, these children would not die in the usual sense—they would join their ancestors on mountaintops to watch over the land.
The Inca Empire, at its height in the early 1500s, stretched thousands of kilometers along the Andes. Children selected for sacrifice were often from noble families and chosen for their physical perfection.
Once selected, they were taken to Cusco, the Inca capital, for purification rituals, and then sent on long pilgrimages to remote peaks. For the chosen, especially girls known as acllas or “Virgins of the Sun,” it was considered a great honor, even if it meant never returning home.
In this particular case, the three children—a girl of about thirteen, a younger girl of six, and a boy aged four or five—were taken to Llullaillaco’s summit. There, after months of ceremonial preparation, they were given coca leaves and alcohol, likely to sedate them in the extreme conditions. Scientific analysis of their hair later revealed a timeline of this preparation.
The older girl, now called “La Doncella” (the Maiden), had a dramatic change in diet about a year before her death, shifting from a simple potato-based diet to one rich in maize and meat, likely llama. Her coca use spiked twice in that final year—once when she was probably chosen, and again six months later—while her alcohol consumption surged in the last weeks of her life. By the time she reached the summit, she was heavily sedated.
The younger girl, known as “La Niña del Rayo” (the Lightning Girl), had less coca and alcohol in her system. After death, a lightning strike burned part of her face and shoulder. She was found wrapped in embroidered blankets, with an intentionally elongated skull, a sign of cultural practice.
The boy, “El Niño,” was the youngest. His skull was also elongated, and he was the only one bound with a woolen sling. Buried with miniature figures of finely dressed men and llamas, he lay in a fetal position, wearing a gray tunic and silver bracelet.
Reaching this burial site was no small feat, even for modern explorers. In March 1999, Johan Reinhard and his archaeological team climbed Llullaillaco after weeks of acclimatization, enduring -40°C temperatures and winds exceeding 110 km/h. Just as they were about to turn back, they spotted signs of an artificial layer in the ground.
Beneath 1.5 meters of earth and rock, they uncovered the small chamber where the children had been placed. Alongside the bodies were precious metal and shell statues, pottery, and finely woven textiles—items reserved for the highest ranks of Inca society.
The extreme cold, low oxygen, and dryness of the Atacama Desert environment had preserved the mummies in an extraordinary state. Their skin, hair, and even internal organs remained intact. In La Doncella’s case, one heart still contained frozen blood. They were so well-preserved that scientists could analyze their last meals and the substances in their bodies, providing a rare and detailed view into Inca ritual life.
In 2001, the Children of Llullaillaco were declared a National Historic Property of Argentina. Since 2007, they have been displayed at the Museum of High Altitude Archaeology in Salta, kept in a climate-controlled environment replicating the mountaintop conditions to prevent decay. The mummies are rotated for display to minimize exposure, and strict measures are in place for emergencies, including relocating them by air if power fails.
Their discovery has also stirred controversy. Some Indigenous leaders argue the mummies should have remained undisturbed or be returned to their original resting place, viewing their display as a violation of sacred tradition. Others see value in the scientific research, which has deepened understanding of Inca history, culture, and social control.
The elaborate artifacts and the logistical challenge of placing the children at such altitude suggest imperial-level involvement, reinforcing the image of the Inca Empire as a sophisticated, centralized state capable of orchestrating complex rituals over vast distances.
Today, the Children of Llullaillaco remain both a scientific treasure and a cultural touchstone. They bridge a gap of 500 years, offering a direct, human connection to the Inca world. Their preserved faces and the evidence locked in their hair tell a story of selection, preparation, and sacrifice—one that speaks of devotion, state power, and the cost of honoring the gods on the roof of the Andes.