A good example of a “bypass" made by *cataphiles*. Sometimes galleries are being blocked by the *Inspection Générale des Carrières* (geological inspection dept). This can be seen with the cinder block wall on the model (annotation nb. 3). Cataphiles sometimes manage to dig around the wall and re-open the way. Such squeezes are usually super tight (and aren't straight!)
Scanned with the iPhone12 Pro and Scaniverse. Please feel free to follow my collections of daily scans ([link](https://skfb.ly/6YuwK)) as well as my scans in San Francisco, Paris, or in the catacombs: [link](https://sketchfab.com/edemaistre/collections)