Hi, nooby here, I had a look through the threads and only found the "haze" thread, which so far seems to be unrelated, so here goes...

The huge cracks in the floor at ground zero, another great twist to KC's evolving masterpiece!
Three things that spring to mind:

1. The cracks possibly breach into an underground lab (deep underground lab!) and the cause of the mutation/plague/experiment has escaped from here?

2. A little far-fetched, but the cracks are possibly an opening into another dimension (Cthulhu-style) or even Hell itself (Doom-style) and the cause is actually a malevolent force?

3. Something BIG and as yet unseen has made the cracks