File talk:Columbia University Tunnels.gif

The supposed tunnels crossing under Broadway are not real. There is a subway tunnel immediately under Broadway. That tunnel leaves no room for other tunnels above. Excavating tunnels below would be difficult and expensive, and there has never been a good reason to do it. (Crossing the street is pretty easy except during major blizzards, when classes would be canceled anyway.) Besides, the supposed tunnels would run between Barnard and Columbia; neither institution could have built them on its own, and the two have never had reason to build such tunnels jointly.