Eclipse Easter Egg

The  is an easter egg featured on the Nazi Zombies map Shangri-La.

Step 1
At the starting room, there are four dials each on their own wall in front of the temple and Pack-a-Punch Machine. When all four players press 'X' at the same time, the moon will eclipse the moon, and a large meteorite will appear on the top of the temple. Nothing else is currently known.