Sican Culture: Gold Masks and Pyramids of Batan Grande

The Sican culture, also known as the Lambayeque culture, flourished on the dry north coast of Peru from about AD 750 to 1375. At its height between roughly 900 and 1100, its rulers built massive adobe pyramids at Batán Grande, organised the large-scale production of arsenical bronze and were buried with some of the finest gold work ever made in the Andes. Its famous gold masks are among the best-known images of ancient Peru.

Origins and the Naymlap legend

The Sican emerged in the Lambayeque region after the decline of the Moche, whose traditions of metalwork and adobe building it inherited. The culture was named and defined by the Japanese archaeologist Izumi Shimada, who has led excavations at Batán Grande since 1978.

A legend recorded by the Spanish cleric Miguel Cabello Valboa in 1586 tells of Naymlap, a lord who arrived by sea on balsa rafts with a large retinue and a green stone idol, and founded a dynasty in Lambayeque. Some historians connect the story to the Sican elite, but it was written down centuries later and cannot be treated as a reliable record.

Three periods

Archaeologists divide the culture into three phases:

• Early Sican (c. 750–900): a formative period with influences from the Moche and from the highland Wari world.
• Middle Sican (c. 900–1100): the classic phase, centred on Batán Grande, with monumental architecture and lavish elite burials.
• Late Sican (c. 1100–1375): after a crisis, the centre shifted to Túcume, a huge complex of more than two dozen pyramids.

Batán Grande

Batán Grande lies in the La Leche valley, in a dry forest of carob trees now protected as the Pómac Forest Historical Sanctuary. Its religious core contains more than a dozen great truncated pyramids of adobe brick, such as Huaca Loro, Huaca Las Ventanas and Huaca Rodillona.

Many adobe bricks carry marks, perhaps showing which community or group made them as a form of labour tax. The site served as a ceremonial capital and as a burial ground for the elite.

Gold and bronze

The Sican were outstanding metalworkers. Their gold masks, often painted red with cinnabar, show a face with characteristic almond-shaped, winged eyes. This figure, known as the Sican Deity, appears on masks, ceremonial knives (tumis), textiles and pottery.

They also produced arsenical bronze, an alloy of copper and arsenic, on a large scale, using smelting furnaces worked with blowpipes. Small I-shaped sheets of copper alloy, known as naipes, were made in standard sizes and bundles, and many researchers think they served as a form of currency or store of value.

The Lord of Sican

In 1991 and 1992 Shimada’s team excavated the East Tomb at Huaca Loro, one of the few elite Sican tombs found intact. The central figure, a man aged around 40 to 50, had been buried with a gold mask, a headdress and a vast quantity of goods, estimated at more than a tonne in total, including gold, bronze, shells and semiprecious stones. Several other people, including young women, were buried with him.

Earlier, from the 1930s onwards, looters dug thousands of holes at Batán Grande, and many Sican gold objects reached private collections and museums abroad. Today the finds from scientific excavations are displayed in the Museo Nacional Sicán in Ferreñafe, opened in 2001.

Society and religion

Sican society appears to have been sharply divided by rank. Elite tombs contain huge quantities of precious metal, while ordinary burials are simple. Studies of teeth and bones also suggest that different groups, possibly of different ancestry, lived side by side and kept their own burial customs.

Religion centred on the Sican Deity, often shown as a figure with winged eyes and pointed ears, sometimes linked to the sea and the sky. The great pyramids at Batán Grande were platforms for temples and rituals honouring this deity and the elite ancestors buried beneath them.

Trade brought exotic materials to the elite. Spondylus shells came from the warm waters of Ecuador and further north, showing that the Sican were part of long-distance exchange networks reaching well beyond Peru.

Decline and conquest

Around 1100, a long drought followed by severe El Niño flooding struck the region. At about the same time Batán Grande’s temples were burned and abandoned, possibly in a revolt against the ruling elite. The Late Sican capital at Túcume continued to flourish.

Around 1375 the Lambayeque region was conquered by the Chimú kingdom, centred at Chan Chan. The Chimú were in turn absorbed by the Inca in the 1460s or 1470s.

Timeline

• c. AD 750: Early Sican culture emerges in the Lambayeque region.
• c. AD 900: Middle Sican period begins; Batán Grande becomes the main centre.
• c. AD 1000: Burial of the Lord of Sican in the East Tomb at Huaca Loro.
• c. AD 1100: Drought and floods; Batán Grande’s temples are burned; the centre moves to Túcume.
• c. AD 1375: The Chimú conquer the Lambayeque region.
• 1978: Izumi Shimada begins the Sican Archaeological Project.
• 1991–1992: Excavation of the East Tomb at Huaca Loro.

Why it matters

The Sican culture links the Moche and the Chimú in the long history of the Peruvian north coast. Its metalwork shows a technical skill unmatched in the Americas at the time, and its rise and fall illustrate how climate shocks, religion and politics could combine to transform an Andean society.