There are three secret places that I know of in the destiny beta. All of them are guarded by invincible troops so if your a low level don't go after them. The invincible troops are showed by having a level of ??. All three have one loot crate and two of them have one dead ghost. The first is under a small building in "The Steppes". You can hear a roaring sound as you go near the building it is the most obvious of the three. Once your down there you can see there is one Hive Knight and two Hive Acolytes. Once you enter where they are turn left two find the loot crate also as you enter there is a chance of anther loot crate spawning outside the entrance. The second place is in "Sky Watch". If u jump off the cliff behind the helicopters there is a hole in the wall. An invincible Hive Ogre will come out. He is hard to get by but the loot is very easy to find and the ghost is in the room to the right. The last is a whole new place and every one there is invincible. It is in a place called the "Grotto". How you get there is quite simple. As soon as you enter the Forgotten Shore just keep going forward and in the corner there will be a path way. Go along it until you find two Fallen Dregs. Go past them to get to the Grotto. It is full of Hives and and a new enemy called a Hive Shrieker is there. As you enter the Grotto the path will spilt into two. Go down the bottom one to find the dead ghost. There is also a big steel door that will probably have something to do with the story on the bottom path. I still can not find the loot crate because I can't go in with out being killed. Hope you like this msg me if you find anymore places. Also msg me if you can find the loot crate in the Grotto.