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Chacabuco Saltpeter Works

Plizio editorial teamUpdated: Jun 2026Data Sources

Historical site

Weather…

The Chacabuco Saltpeter Works is a former nitrate mining town located in the Atacama Desert, approximately 100 kilometers northeast of Antofagasta. Established in 1924, it was one of the most modern facilities of its era, utilizing the Shanks system to extract 'white gold.' The settlement featured a cinema, a hotel, a hospital, and extensive residential areas strictly divided by social status. Following the global economic crisis and the rise of synthetic fertilizers, the works were shut down in 1940, leaving the site as a vast ghost town. A dark chapter began in 1973 when the Chilean military dictatorship repurposed the abandoned town into a concentration camp for political prisoners. The camp was closed in 1974, and the site was later designated a National Monument. Today, the crumbling walls and rusted machinery serve as a poignant reminder of both Chile's industrial boom and its political tragedies. The site is now visited as a museum for saltpeter history and human rights, aiming to preserve the memory of the victims of the regime.

Location: Chile
Top sights: Oficina Salitrera Ausonia · Oficina Salitrera Arturo Prat · Oficina Salitrera Anibal Pinto

Best time to visit & climate

The most pleasant time to visit is Jan, Feb, Dec.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg °C	20	20	19	18	15	14	14	15	16	18	19	19
Rain mm	2	3	1	0	1	1	1	1	0	0	0	1

📋 Practical info

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Visiting

The former saltpeter works are open to the public, allowing you to explore the abandoned industrial structures and the prison camp areas. Most buildings can be viewed from outside, but some interiors may be closed off for safety.

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Typical hours

Typical visiting hours are during daylight, often from mid-morning to late afternoon. It is wise to check with the local tourism office for current schedules.

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Photography

Photography is generally permitted throughout the site, including the decaying machinery and prison huts. Using a tripod might require a special permit.

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Time needed

Plan at least one to two hours to walk around the extensive compound. A guided tour adds another hour and provides historical context.

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Combine with

Combine this visit with the nearby Oficina Humberstone to see another preserved saltpeter ghost town. The coastal city of Antofagasta is a convenient base.

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Getting there

The site is located about 100 km east of Antofagasta, accessible via Route 5 and a signed turnoff. A rental car is the most practical way to reach it, as public buses are infrequent.

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Insider tip

Bring plenty of water, a hat, and sunscreen because the Atacama Desert sun is relentless. Sturdy closed-toe shoes are essential for walking on gravel and rubble.

Geography

Coordinates

-23.14360, -69.57000

Facts

Established in 1924 as one of the most advanced saltpeter factories.
The site covers an area of approximately 36 hectares in the desert.
Ceased operations in 1940 due to competition from synthetic fertilizers.
Served as an internment camp for political prisoners from 1973 to 1974.
Declared a National Monument of Chile on July 26, 1971.
Features a well-preserved theater that originally seated 500 people.

Explore nearby

Notable places around

Spence Mine36 km · NExplore →

Atacama Desert46 km · NWExplore →

Escondida Mine71 km · NWExplore →

Chuquicamata Mine79 km · NEExplore →

Chuquicamata82 km · NEExplore →

Geoglyphs of Pintados83 km · EExplore →

Radomiro Tomic Mine83 km · NEExplore →

Altonorte Complex92 km · SExplore →

Route planner — Car & Motorhome

Where do you start? We build the route here, with stops and country notes along the way.

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Overnight stops

Vehicle

Only stops with (optional): 💧 Water ♻️ Disposal 🔌 Power 🚻 Toilets 🚿 Shower

Sights in the town Chacabuco Saltpeter Works (5)

Oficina Salitrera Ausonia🌿 nature

This viewpoint looks out over the remnants of the Oficina Salitrera Ausonia, showcasing the decaying industrial infrastructure of the 19th-century saltpeter boom.

Oficina Salitrera Arturo Prat🌿 nature

From this vantage point, visitors can observe the sun-baked ruins and abandoned facilities of the historic Arturo Prat saltpeter works in the Atacama Desert.

Oficina Salitrera Anibal Pinto 🌿 nature

This desolate desert viewpoint has a panoramic perspective of the deserted Aníbal Pinto saltpeter processing plant and its surrounding barren camp.

Oficina Aníbal Pinto🏺 historical

The ruins of Oficina Aníbal Pinto feature the crumbling adobe and rusting metal remnants of a historical nitrate extraction settlement.

Oficina Salitrera José Santos Ossa🏺 historical

Scattered across the desert sands, the ruins of the José Santos Ossa saltpeter works stand as a silent testament to Chile's historic 19th-century mining era.

Sights nearby

Frequently asked questions

What is Chacabuco?

A former saltpeter works later used as an internment camp.

Where is it located?

In the Atacama Desert, about 100 km northeast of Antofagasta.

Can the ruins be visited?

Yes, the ghost town is open to visitors.

Is there a danger of landmines?

Some areas nearby were mined; it is essential to stay on the paths.

What is the climate like there?

Extreme desert heat during the day and cold at night.

Chacabuco Saltpeter Works: where is it located?

Chacabuco Saltpeter Works is located in Chile.

Chacabuco Saltpeter Works: what is there to see?

Highlights include Oficina Salitrera Ausonia, Oficina Salitrera Arturo Prat, Oficina Salitrera Anibal Pinto.

Chacabuco Saltpeter Works: when is the best time to visit?

The most pleasant time to visit is Jan, Feb, Dec.

Chacabuco Saltpeter Works: why is it worth visiting?

The Chacabuco Saltpeter Works is a former nitrate mining town located in the Atacama Desert, approximately 100 kilometers northeast of Antofagasta.

View on map → The Top 50 Attractions → OpenStreetMap →

Chacabuco Saltpeter Works

Best time to visit & climate