The small cocoon feels empty, though a DC 35 Know: Engineering check identifies it as a cocoon woven by a swarm of nanites to protect themselves and conserve power.<br/><br/>Flights of stairs ascend and descend to this large atrium. The ceiling above the landing is open to the floor above, while doors on the south and east walls of the atrium allow access to other parts of this floor. Short messages have been written above three of the doors. The air in this room smells strangely acrid.