View source for List of tunnels

This page is a '''list of tunnels'''.

== Mudd/Uris/Havemeyer tunnel system ==

One steam tunnel system connects [[Mudd Hall]], [[Uris Hall]], [[Dodge Fitness Center]], and [[Havemeyer Hall]], and is generally considered the easiest to access. These tunnels contain old rail track that was used to transport coal for heating. They also contain the "Signature Room," where one can find many quotes and names left by previous tunnelers. As with all tunnels on campus, these contain many more secrets for students to discover. This tunnel system also used to connect to the first floor of [[Pupin Hall]], but that way was blocked in the 1990s. 

Until the Summer of 2003, the first floor of Pupin was virtually untouched from the last days of the [[Manhattan Project]]. Notes and daily logs scattered dusty tables. Half-completed experiments sat in stasis, only visible to the few explorers who got in. Since 2003, the first floor has been cleaned out, and is now mostly empty. However, one of the first cyclotrons remains, though it is difficult to access.

== Other tunnel systems ==

Another tunnel system connects [[Havemeyer Hall]], [[Math Hall]], [[Lewisohn Hall]], and the [[Miller Theater]].

A tunnel between [[Butler Library]] and [[Low Library]] is rumored to exist, but no evidence of such a tunnel has ever been found.  Any entrance to this tunnel from [[Butler Library]] is well hidden or heavily locked, and the [[Low Library]] entrance would be next-to-impossible to find given that Campus Security is based on the first floor.

There is no tunnel to the [[Barnard campus]] (except that you can just walk through the subway station), and almost definitely none to [[East Campus]].

==Inaccessible tunnels==

===[[Buell Hall|Buell]] to [[Low Library|Low]]===
This passageway does exist, but it's a tiny crawlspace filled with steam pipes that are hot to the touch. It probably also contains asbestos. You can see it from the [[Kent Hall|Kent]]-[[Buell Hall|Buell]] passage, but the way to it is blocked. Don't even think about climbing over the pipes, because if you try, you'll burn yourself badly. These pipes, like all the pipes in the Buell crawlspace, don't have any sort of insulation on them - which is why it's always hot as Hades in there.

==Unconfirmed/speculated tunnels==

*Mental Institution Foundation tunnel. Apparently, these tunnels can be found beneath the lower level of the Old Powerhouse.
*[[Butler to Low tunnel]]

== External links ==
* [http://www.columbiauniversitycampus.com/#/restricted-access/Innards-5726 Restricted Access Photos]

[[Category:Tunnels]]