User blog comment:KATANAGOD/Treyarch Teases Zombies on Facebook/@comment-1888363-20120913050054/@comment-1263839-20120914053726

Aside from being copy pastes of the maps I linked. Shangri-La being a small exception, seeing as it just has almost the same shape as Jungle. Moon's "Area 51" section is Hangar 18. Ascension is just Launch, but the outside area of it. Der Riese is a copy paste of Corrosion and Nightfire.