The upcoming Cuban Zombies map is a zombie map found in the game files for Call of Duty: Black Ops. This map apparently was scrapped late in the game's production, as everything but the map name can be found. The map contains elements from the multiplayer maps Array, Crisis, Radiation, and Silo.
According to the game files, Soviet scientists in Cuba were creating a weaponized version of Element 115 so that they could launch it at the United States. However, one day, a chamber leak let out the 115, supposedly contaminating everyone in the lab. It is unknown how Dempsey, Nikolai, Takeo, and Richtofen, the playable characters in this map, got here.
This map takes place in a Soviet missile site, with the missiles and launching pads from Silo. Next to it is a mining station which is mining out Element 115. This area is from Radiation. The labs, from Crisis, are also in the map. Lastly, an radar station alerts the personel at the base of any incoming vehicle or hostiles. This station is from Array.
This may be the largest map yet, according to the layout.