Chapman Catacombs
Allright, they really don't look that much like catacombs, but the layout is rather interesting and unique on campus. The basement of Chapman consists entirely of one long rectangular tunnel looping around the outside of where a real basement would be, as well as a small mech room with valves and the door into the real tunnels. There's a side passage off to the Campus Bible house, but it's just an ancient wooden-walled pipe conduit too small to crawl through. The catacomb loop starts out as a real tunnel, but as the pipes disspear through the cieling into rooms above it gets less and less cowded untill it's just a concrete hallway with one pipe on the wall. This would be a good place to take neophyte tunnelers for a quick, low-risk taste of tunneling, although it's a pain in the ass to get to it from the real tunnels.
A sequential virtual tour of the loop, starting from the mech room
and going counter-clockwise.
The tunnel into Chapman from the main system is another cramped one,
with a difficult squeeze at the junction next to some leaking valves.