That tunnel has been the subject of a dozen half‑true tales, so I’ll need your GPS, a flashlight, and a sturdy pair of boots before we go rummaging through dust. Let me pull the city archives—there’s a note that it was a “restricted rail” in the 1920s, probably used for smuggling contraband out of the industrial district. The inscription you’re after might just be an old ticketing tag that someone carved back in the ’20s; a quick scan should tell us if it’s a genuine relic or just a prank from a later vandal. Ready to dig up the details, or should we bring a ladder first?