Ive got a theory just now.....
Maybe the normal "time" in the map is actually the future and when you activate the eclipse you go back to the present like the anniversary of Der Riese....
Then that grave is Richtofen's if it is a grave and he died via the zombies. so when you get the stone he has the ability to control the zombies thus changing the future thus making himself no die! HAHA
Or maybe the grave thingy is a tribute to the zombies "Master" which is ricktofen who made himself their god? HAHA!
I dont know just looking for some Aussies to play this easter egg with.....
:shock: