El Chiflón del Diablo, Coal mine in Lota, Chile.
El Chiflón del Diablo extends beneath the Pacific Ocean, featuring a network of tunnels that reaches 850 meters below sea level at its deepest point.
The mine operated from 1884 to 1970, playing a central role in Chile's coal industry and supporting the economic development of the Biobío region.
Chilean author Baldomero Lillo documented the miners' experiences in his 1904 book Sub Terra, which later inspired a film adaptation in 2003.
Former miners guide visitors through the tunnels during 90-minute tours, explaining mining techniques and sharing experiences from their time working underground.
The mine maintains a constant temperature of 23 degrees Celsius throughout the year due to natural ventilation from ocean currents.
Location: Lota
GPS coordinates: -37.07583,-73.16056
Latest update: May 27, 2025 06:48
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