This tunnel leads to a small room containing a large fan which blows air throughout the whole complex. All of the tunnels have equipment racks down their lengths, like the spring-suspended ones on the left of this tunnel. Long metal gutters guide wire bundles and pipes down the tunnel. All major pipes in the facility have flexible metal-weave connectors on them in the junctions between sections of tunnel, so that if the installation is bombed, the pipes aren't torn as the ground moves. In the event of an attack, the machines would definitely have lasted much longer than the people, even though they kept provisions to feed 150 people for 1 month without having to go to the surface. Behind the camera is the main environment room.