This room was originally a *cloche de fontis* (bell-shaped cave formed by a tunnel collapse). The French flag and the sign commemorate its building and gave its name to the room (*Salle du Drapeau* or "flag room")
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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)