Illapa

The Inca described thunder as the sound of a sling.

Illapa stood somewhere in the Milky Way in shining garments and swung a sling loaded with a stone. When the stone cracked out, lightning flashed. The sound followed. His sister carried a jug of water along the celestial river. When he struck it open, the water fell as rain. The Milky Way was a water source, and Illapa controlled it.

On the high Andean plateau, where frost can kill crops in August and drought can stretch across years, this was working theology.

The Sling and the Storm

Illapa ranked third in the Inca divine hierarchy, below Viracocha and Inti. His shrine at the Coricancha in Cuzco contained a golden figure of a man in shining garments. Cobo’s description, written in 1653 from earlier sources, puts him in the same building as Inti, Mama Quilla, and Viracocha — the inner ring of Inca divinity.

His domain was more practical than the solar and lunar cults. Inti governed time and legitimacy; Mama Quilla governed the calendar. Illapa governed whether the crops lived. The Andes receive most of their rain between November and March, but the distribution is irregular. In dry years, water from Illapa’s sister’s jug simply did not fall. In violent years, hail shredded plants before harvest. Both outcomes fell under Illapa’s authority. Drought rituals were addressed to him specifically, with offerings of food, chicha, and animals.

Children of Illapa

The Inca response to a lightning strike depended entirely on whether the person survived.

Anyone killed by lightning received special treatment of the body. Standard Inca burial practices did not apply. The person had been taken by Illapa, and the body was handled accordingly, with specific rituals recorded by Molina and Cobo that separated the lightning-killed from the ordinary dead. The site of the strike was also treated as sacred.

Anyone who survived was called churi illapa, child of Illapa. The experience was understood as a direct selection by the deity: he had touched the person and let them live. Survivors were expected to enter religious practice, becoming specialists in weather ritual and divination. The encounter with lightning was a calling.

The logic was consistent with Inca thinking about divine encounter more broadly. To come into direct contact with a powerful deity and survive was to be changed by it. The survivor’s body had been touched by what the deity controlled, and they carried that contact into whatever came next.

Weather on the High Plateau

At the altitudes where much of Andean civilization developed, weather is not a background condition. Frost at 3,000 meters can arrive in any month. Hail destroys crops that have grown for months in a single afternoon. Lightning strikes on exposed ridgelines are common. The deity who governed these phenomena held tangible authority over agricultural survival.

Illapa was called on before planting and during drought with ceremonies described in Molina’s Relación. Cobo records that Inca communities on the high plains maintained specific local shrines to Illapa separate from the Coricancha, places associated with weather patterns in that particular landscape. His worship was both state-level, centered at Cuzco, and local, tied to the specific weather behavior of individual valleys and plateaus.

Further Reading

• Inti — the sun god who ranked above Illapa and whose solar calendar the Inca built their state religion around
• Viracocha — the creator who stood at the top of the Inca divine hierarchy, above both Inti and Illapa
• Pachamama — the earth goddess whose fields received or were destroyed by the rain Illapa controlled
• Mama Quilla — the moon goddess who shared the Coricancha with Illapa and governed the calendar his storms disrupted

Sources

Bibliography. The same list is held in the article’s frontmatter for the citation tools that read it programmatically.

• Historia del nuevo mundo, Bernabé Cobo, 1653 — description of Illapa’s shrine at the Coricancha and his attributes
• El señorío de los Incas, Pedro de Cieza de León, c. 1550 — accounts of Inca weather worship and drought ritual
• Relación de las fábulas y ritos de los Incas, Cristóbal de Molina, c. 1575 — ritual context for Illapa in the Inca festival calendar
• Nueva corónica y buen gobierno, Felipe Guaman Poma de Ayala, c. 1615 — illustrations of Illapa and weather ceremonies
• Suma y narración de los Incas, Juan de Betanzos, 1551 — references to lightning and weather in Inca cosmological accounts