During Black Ops II starting with Trans(h)it, you had to choose who you were going to obey, Richtofen (Blue) or Maxxis (Red).
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In each of the 3 Main Maps you had to find a NavCard, build a NavCard table, & complete the Main Quest.
Once Buried was completed people noticed this "Mysterious Box" that had a big ass Button in the Center. There were 4 Rows of 3 Lights.
If you and your 3 Teammates had all 12 Lights the same Color, you could press the Button and you would receive an End-Game of sorts.
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Richtofens' Reward was all the perks, including Mule Kick 2.0 which allowed yout to ccarry 4 Weapons. He also granted you a permanent Fire Sale.
Thats all he wanted was to have these pawns he could play with forever. He also possesses Samuel so he can have fun killing the Zombies himself. (I believe most of this is correct).
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Now onto Maxxis' (the real sinister Mother-F****r).
Maxxis wanted control of the Aether. Once you press that button for his side, you immediately know you F****d up. The screen turns an almost Blood red color amd shakes violently. Even his voice changes.
He also condems Richtofen to Buried along with Misty, Marlton, Russman, Stulinger. Every now and then you would see a Blue Eye Zombie in the mix of Yellow Eyes. You can even hear Richtofen talking.
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I'm not sure alot of people explored much of the map while it was in this state, but it definitely seemed like a good place for more.
The reason the map was called "Buried", it didn't matter whos' side you chose the Tranzit crew was not leaving that map.