So in Destiny's newest trailer, Jason Jones tells us about "The Vault of Glass". It starts a 5:50 in the above video. It is and i quote "the most challenging experience we have ever created." What do you think is in the Vault of Glass? From the video, and the brief look at it, it almost looked like an agility course, as the floor was magically appearing, and disappearing quickly. Making the guardians in the video have to jump to the new floor, before the one they are on disappeared. You will no doubt have to fight something(s) in this vault, but what could it be? Could it be the "darkness"? [u][b]Theory[/b][/u] There are to possibilities, one is more likely than the other to me. The first possibility is that the Vault of Glass is an end game type raid. Bungie has said before that raids will be some of the hardest content in Destiny, it would only make sense for the last one to be this Vault of Glass. Right before you actually see in the Vault of Glass, it shows six players walking to it. We know that raids in Destiny contain six players. There is a very good chance that the Vault of Glass is a end game raid. The second possibility is that it is the end of Destiny's "story", at least for the first game. As the final boss battle/ruin you have to escape/fight through, it would make sense for this to be the hardest. It could so show us more of the "darkness" as i said before. I personally believe that it is an end game raid, as we know that some of the raids will be extremely hard until you reach the "end" of the game. In most games raids give the best rewards out of anything and Jason says "earn Destiny's ultimate rewards". So we know some of, if not, the best rewards in Destiny will come from this "Vault of Glass". What do you guardians think is in this Vault of Glass?