On the morning of February 14, 1655, the war that Spain thought it was winning turned on it all at once. From Osorno in the deep south to the Maule River far to the north, Mapuche fighters rose in a single coordinated blow, falling on the scattered estates, forts, and households of the Spanish colony. It was not a sudden eruption of rage. It was an answer, delivered by people who had watched their relatives carried off in chains, to a system that had made the hunting and selling of human beings a routine business of the frontier.
To understand the rising, you have to understand what the Spanish had legalized. After an earlier Mapuche revolt destroyed a string of southern cities, the Spanish crown declared in 1608 that Mapuche taken in war could be enslaved, reasoning, in the language of the era, that those who resisted were heathen captives and therefore lawful property. What followed was decades of slave raiding dressed up as warfare. The Army of Arauco, the Spanish frontier force, increasingly turned its campaigns into manhunts, seizing Mapuche men, women, and children to be sold. This was the open wound at the heart of the colony, and by the 1650s it had been rubbed raw.
The immediate triggers piled up fast. The 1651 Parliament of Boroa, a negotiated settlement, had bound the Mapuche with terms they resented, including a prohibition on carrying weapons without Spanish leave. Then came the slave hunters. The colonial officer Juan de Salazar drove aggressive raiding expeditions into Mapuche country, and in 1654 one such campaign ended in catastrophe for the Spanish at the Battle of Río Bueno. Salazar happened to be the brother-in-law of the governor, Francisco Antonio de Acuña Cabrera, which made the whole enterprise look, to colonists and Mapuche alike, like a family business in human flesh. Under a leader the records name as Clentaru, the Mapuche prepared to strike back across the entire frontier at once.
When the blow fell on February 14, its scale stunned the Spanish. Contemporary accounts describe more than four hundred estancias destroyed in the broad band of country between the Bío Bío and Maule rivers. Mapuche held in bondage freed themselves and joined the fight. Livestock was driven off, houses were burned, and the thin scatter of Spanish settlement across the south was thrown into retreat. During one evacuation near Santa Juana, some two hundred and forty Spanish soldiers were killed. The colony that had treated the Mapuche as a resource to be harvested suddenly found itself fighting for survival, its forts isolated and its southern reach collapsing back toward the coast and the sea lanes that kept it alive.
The uprising broke the colonial government as surely as it broke the frontier. Blame for the disaster fell on Acuña Cabrera and his slave-raiding kin, and on February 20 the town council of Concepción took the extraordinary step of deposing the governor, an authority appointed by the King of Spain himself. The colonial high court in Santiago at first refused to accept it, and the months that followed dissolved into political turmoil over who truly held power, even as the surviving Spanish forces clung to fortified positions around Valdivia. Reinforcements eventually arrived by sea from Peru around the new year, bringing provisions, munitions, and several hundred soldiers, and a new governor, Pedro Porter Casanate, took office at the start of 1656. But the Spanish had not won. The events of 1655 opened roughly a decade of renewed war, and they stand as one of the great moments of Mapuche resistance, a people who refused, again and again, to be conquered or sold.
This article is anchored to La Serena on the Coquimbo coast at about 29.90°S, 71.25°W, though the 1655 uprising itself swept across south-central Chile, from the Maule River south to Osorno, far below this point. The slave-raiding system that triggered the revolt reached across the whole colony, and La Serena had itself been destroyed in an earlier indigenous uprising in 1549. From the air, La Serena shows as a coastal city of neocolonial streets backed by dry Andean foothills; the heartland of the Arauco War lies hundreds of kilometers to the south, in the green, river-laced country around the Bío Bío. The nearest airport is La Florida (ICAO: SCSE) at La Serena. Coastal fog is common along this shoreline at dawn and dusk.