what happened here?

Came across this:

which basically looks like one world has been crudely attached to another with a very defined line down the middle.

I followed this line down and the left hand side came to an ocean, while the right carried on land. I then found a village:

nazi's nazi's everywhere...


question: where to i download

I have the smae thing kind of by my house where half a mountain is just gone and its to clean in half to be a player digging