This image displays a brightly lit, concrete-lined underground railway tunnel curving to the right in Antony, France

This image displays a brightly lit, concrete-lined underground railway tunnel curving to the right in Antony, France. A single individual, seen from behind, stands on a raised service walkway on the left side of the tunnel. This person is wearing an orange high-visibility jacket with reflective stripes, orange trousers, and a white hard hat. Adjacent to the person on the walkway are two bundles of elongated materials, wrapped in light-colored protective coverings and stacked on wooden pallets, with a red manual pallet jack positioned nearby. The tunnel's ceiling and walls are composed of light gray concrete segments. Multiple runs of metal cable trays are suspended from the tunnel ceiling, extending along its length. Two sets of railway tracks occupy the right side of the tunnel, curving sharply into the distance. A continuous linear LED light strip illuminates the right wall of the tunnel, and a reddish glow emanates from further down the curving section of the tunnel. Metal railings delineate the edge of the service walkway and also run alongside the railway tracks on the right.