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Tarapacá Region

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The Tarapacá Region is one of the 16 first-order administrative divisions of Chile. It covers an area of 42,225 km², which is comparable in size to Switzerland. The region is located in northern Chile along the Pacific Ocean. To its north lies the Arica y Parinacota Region. To the south is the Antofagasta Region. The eastern borders meet the Oruro and Potosí departments of Bolivia. The region is divided into two provinces: Iquique and Tamarugal. The capital is the port city of Iquique.

Iquique theater
Iquique theater

The geography of Tarapacá consists of five distinct longitudinal zones. The first is the coastal plains, which are very scarce. In most places, the Coastal Range drops abruptly into the sea. This range begins at Cerro Camaraca, south of the Line of Concordia. The second zone is the Intermediate Depression. This area is about 40 km wide and 500 km long. Within this depression, large plains called pampas are formed. The Pampa del Tamarugal is the largest of these pampas. This area marks the start of the Atacama Desert.

The third zone is the Andes mountain range. This range has an eastern branch in Bolivia and a western branch in Chile. High volcanoes, such as Isluga, rise above 5,000 meters. The fourth zone is the Altiplano, located between the two mountain branches. The Altiplano has an average elevation of 4,000 meters. It contains salt flats like Huasco and Coposa, and high-altitude wetlands called bofedales.

These wetlands support biodiversity, including llamas, vicuñas, and flamingos. The low atmospheric pressure at this height can cause altitude sickness, known locally as mal de altura or puna.

Climate varies greatly depending on the specific zone. Along the coast, the sea keeps temperatures mild. They usually stay between 20 °C and 25 °C throughout the year. In the desert interior, the air is extremely dry. The region experiences very large daily temperature changes. The Altiplano faces even more extreme shifts. Temperatures can reach 30 °C during the day and drop to −30 °C at night. Precipitation is very rare in the region. Most rain falls in the Andean puna during the austral summer. This event is called the Altiplanic winter or Bolivian High.

Human history in the region spans many millennia. The Chinchorro culture lived here more than 10,000 years ago. Later, nomadic gatherers and fishers inhabited the land. The Changos lived on the coast, while the Aymara lived in the highlands. The Atacameños lived in the south near the Loa River. The Inca Empire eventually annexed the territory. After the Spanish conquest, the land was part of the Viceroyalty of Peru. It later became part of the Republic of Peru in 1824. It remained Peruvian until the War of the Pacific in 1879.

The War of the Pacific led to significant territorial changes. The Chilean army invaded the Peruvian Department of Tarapacá. Major battles occurred, such as the Battle of Arica on 7 June 1880.

Sinking of the Esmeralda during the battle of Iquique
Sinking of the Esmeralda during the battle of Iquique

The 1884 Treaty of Ancón transferred the territory to Chile. A later agreement, the Treaty of Lima in 1929, settled borders with Peru. This treaty returned Tacna to Peru but gave Arica to Chile. The treaty also says Chile must consult Peru before transferring sovereignty. This history shaped the modern political boundaries of the area.

Economics in the region were once driven by saltpeter mining. Saltpeter, or nitrate, was a vital resource. This boom helped cities like Iquique and Pisagua grow into major ports. Many nitrate offices were built across the landscape. However, most companies were owned by North American or European interests. Workers often faced a harsh and exploitative system. In 1907, workers protested for better wages and conditions. This led to the Santa María School massacre in Iquique. The boom ended in the mid-1920s due to synthetic nitrate manufacturing. This caused economic collapse and the closure of many desert towns.

The modern Tarapacá Region was officially created in 2007. It was formed by subdividing the former Tarapacá Region. President Michelle Bachelet signed Law No. 20,175 to create this new division. The law was signed in Arica and came into force in October 2007. One part of the new region, the Province of Tamarugal, began in the Santiago Humberstone nitrate office. Today, the region manages its two provinces through appointed intendants. It remains a place of deep history and unique desert geography.

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File:Sinking of the Esmeralda during the battle of Iquique.jpg
Sinking of the Esmeralda during the...
File:Iquique theater.jpg
Iquique theater.jpg
File:Salar de Coposa, Región de Tarapacá.JPG
Salar de Coposa, Región de Tarapacá.JPG
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