Pampa Unión, National monument in Sierra Gorda, Chile
The abandoned structures of Pampa Unión stand in the Atacama Desert, displaying the remains of a former saltpeter processing facility from the 20th century.
The site operated as a saltpeter office from 1911 to 1954, contributing to Chile's industrial development during the nitrate mining period in northern regions.
Pampa Unión preserves the architectural elements of industrial facilities that characterized the saltpeter extraction era in the Atacama Desert region.
Visitors can reach Pampa Unión by taking Route R-25, located 144 kilometers from Antofagasta, where they can examine the industrial archaeology of the site.
The designation as a National Monument through decree D.S. 716 in October 1990 protects these industrial remains within one of Earth's most arid environments.
Location: Sierra Gorda
GPS coordinates: -23.07973,-69.50244
Latest update: March 7, 2025 13:36
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