I was reading the Help FAQ page, where it stated "If you find an exploit, we want to know about it in the #Help forums. Don't be scared; we won't be upset if you found a way to make something weird happen. Let us know about it, so we can fix it to ensure we give everybody the best experience possible!"
So, with that being said, I want to share some things that I found:
1. In the giant land tank where Valus Ta'aurc is, I was exploring under the tank, and if you go underneath the tank on the sand in the center between the tracks, there's a small opening above. If you jump up, you'll go right through the environment and be in the tank, without the walls and so forth.
2. In The World's Grave, in the room with the Knights and Ogre, on the left side, there's a place where you can jump on top of a banner, and when you jump down, you'll end up on the other side of the large door. Basic jumping will allow a player to see a huge round room with a pedestal in the center, and there are also missing walls there as well. You can walk around a little too, but you can't get in.
Anyway, I hope this helps. Please don't ban me.
Love,
Atomika
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You won't get banned for that, we are allowed to explore everything in the game, only glitches forced by modded consoles will be banned. Bungie said that in an update a while back.