Done!<br/><br/>Okay, so when the doors are opened, you'll be met with no light(the Guardians are blind) but from the light of the travelers torches, you see one solitary Guardian standing in between them, and entering.  It doesn't move, but just stares at them with sightless eyes.  It wont move either, but if our part move forward, more guardians will be revealed.  They to don't move.  They won't stop you from entering either, and no one knows why they don't.