Fosse n° 12 des mines de Lens, Coal mine in Loos-en-Gohelle, France.
Fosse n° 12 is an industrial coal mining complex with two main extraction shafts and surrounding pit-head structures in northern France's coal basin. The site preserves mining machinery, headgear frameworks, and industrial buildings that reveal how coal was extracted and processed during its active years.
The shaft opened for coal extraction in 1894 and quickly became a major industrial center in the region's economy. Over the following decades it expanded into one of the larger mining operations in the French coal basin.
The residential area surrounding the site housed mining families, with schools and a chapel that anchored the community's daily life. These buildings still shape the local landscape and show how workers and their families formed a tight-knit society around the mines.
The site is accessible year-round and open to visitors who want to walk around and understand its industrial layout. Wear sturdy shoes since the grounds are uneven and you will be walking on industrial terrain.
Even though mining stopped long ago, the sealed shafts are still monitored with an active gas extraction system to ensure underground safety. This ongoing maintenance reveals that a closed mine requires constant attention to prevent hazards beneath the surface.
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