Tunnels, and lots of them. The whole campus is riddled with tunnels. And a good thing too, it's COLD there. Every one scurries around in tunnels above and below ground to get everywhere. Unlike most schools U of M students can truly feel as one with their mascot, the gopher. There is one building on campus which houses the book store that is completely underground. There are a row of windows looking down on to the students in line, and a set of doors. That’s it.