Visit the Humberstone and Santa Laura Saltpeter Works, two former saltpeter refineries located in the Atacama Desert, which are now UNESCO World Heritage sites. These 19th-century industrial complexes played a significant role in the global production of saltpeter, an essential ingredient in the production of fertilizers and explosives. Explore the abandoned facilities and learn about the lives of the workers and their families, who once lived in this harsh environment during the height of the saltpeter boom.
