[quote][b]Posted by:[/b] Dickman [quote][b]Posted by:[/b] CamouflagedVirus hmmmm.... It sounded like a three pin locked door with the pins being about 1 and a half to 2 inches thick being turned open. The lock is old and is easily overturned so that it hits the inner locking mechanism, and then it slides open. but by the sound of the slide it is not that wide of a door, and it sounds like rock on rock instead of the screaching sound old metal would have. So it has to be a ston door with an intergrated locking metal system within it. ....and from what I had seen forerunners do not build their machines through nature like how earth does but within it...perhaps a door of the forerunners leading into a room where earths secret past of forerunner run ins? or a forerunner door leading into an epic battle makeing that suond, the sound that send shivers through your body as you replay the campaign level, because you know what is behind the door? We can only hope so.....[/quote] I thought it was stone-on-stone too at the end. But if you listen closely it's not so much of a scraping sound as much as it is a fluctuating resonance. The sound isn't a solid creak or scrape, it sounds more like an oscillating vibration from mechanical equipment (like engines/motors or even possibly gears).[/quote] I can see, or actually hear, your point. If the door was extremely heavy then it could be gears, but by the sound of the outdated lock mechanism I would have to go foreword and suggest that the opening door is old, and if it did use mechanical method of opening it I would be sure enough to say that the metal would be old as well as the lock and make a older sound. It would be more of a screech of metal more over then a smooth opening metalic sound. However the beauty of bungie is being able to openmindingly think about all the aspects that is halo and see, hear, or even feel it in our own way. So you could be right, and I could be right, there is only one way to find out though, and when that day comes, I wil celebrate with style.