Dark Mechanicus Chemical facility

Above- The Interior of a Dark Mechanicus chemical weapons facility.  Such sites were used to provide the Stygian Empire with a variety of chemical weapons that were used through the Stygian Wars.  They also supplied the Stygian Empire's Alpha Legion Overlords with a large stockpile of these weapons.

The room and the small computer console are from the Spartan Scenics line.  The chemical vats are from armorcast.