Cast
- Damien CochereauNarrator (voice)
- Pierre-Antoine DavanneSelf - Chief engineer for the tunnel boring machine
- Florent MartinSelf - Project manager of the construction
- David DemiereSelf - Conveyor team leader
- Anaïs BarrelSelf - Geologist
- Paul GatinelSelf - Geotechnician
- Jacques TriclotSelf - Project manager
- Rémi FortanétéSelf - Chief engineer
- Franck JoetSelf - Surveyor-Topographer
- Bernard SosnowskiSelf - Manager of the voussoir factory
- Pierre GasparSelf - Pilot of the tunnel boring machine
Crew
- Fabienne RenouxAdministration
- Alexandre GuilloritColor Grading
- Hugo HernandezWriter
- Grégory BalgaEditor
- Guillaume GizardSound Mixer
- Bruno AbatePost-Production Manager
- Jehan FolquéAssistant Editor
- Romain HirschmannAdministration
- Aline GriponAdministration
- Margaux HerremanAdministration
- Quentin DomartWriter
- Carine NonnenmacherProducer
- Olivier JehanEditor
- Valérie MénardProduction Director
- Jeanne Ngon MayohAdministration
- Hugo HernandezDirector
- Quentin DomartDirector