The control silo is the deepest point in the whole complex. It is partitioned off into 4 known floors with a service elevator between them and a latrine on the entry floor. There is one floor above the main floor, currently connected only by a ladder. This is where the control 'computers' are. A ladder also leads down to a floor that contains blowers and other equipment, and from there another ladder leads down (under water). Below the main floor, a service tunnel connects to the launch silo.

Standing next to the control 'computers' on the main floor. The machines left are just empty chassis with thick bundles of cut wires still connected, and face plates with the guages and controls missing. These machines are pretty much analog, designed and built before digital computers were really in vogue, or at least before they were affordable or reliable.

In the floor below the main floor, on the opposite side of the room from the entrance to the service tunnel, this ladder leads down into the dark water below. The top of a door frame can barely be seen just above water level.