Quote from Halopedia About the map 'Sandtrap' "Near the top of one of the temples there is an apparent "Black Hole" that absorbs any explosive attack, for example, if you shoot a rocket into it, it will go through the Black Hole and not explode. This same "Black Hole" lets you see through the eyes of another player." I posted it here for your conveinience, So please dont moan that I just copied and pasted....
Omg? Sounds cool lawl. There's something like a see through through the other player's eyes on the last Campaign level: 'Halo', when you get out of the Forerunner structure were you just've destroyed Guilty Spark, you need to enter the other ForeRunner structure, right? Well go to the entrance, let another player look back and there you go! Me and my sister totally found this on our own and we thought like, wtf?
In the left base on Avalanche (when facing the bases), if you go in to the back room, there is a huge area where you can see through the other players HUD.
That always happens to me whenever I get out of any multiplayer map and far above campaign levels. Its wierd but It happened in halo 2 a lot to me when I broke out of campaign levels.
The thing about the sandtrap black hole is true, some little kid made a vid about it on youtube. I remember watching it a while back.
On the one level where you snipe a bunch of guys and when the two hunters attack you, if you go on top of the huge sturcture in the middle and look down it is a big dark hole and you can see the bottom part of the inside of yourself.
This is just a mirror wall, it happens anytime you get outside a campaign or multiplayer map. If you're playing by yourself on your own box then you see the same images that just happened. ex: You melee and you see all the frames of you meleeing still on the mirror wall. If you play with another person on your box then you see what they see. if you ever glitch then you understand what I mean.