This is the cavern that the beasties climbed out of in that other short story of yours "The shape of things to come", isn't it? (Yes it took me ten minutes to track down the name...)

It's quite cool how you do that. Makes the reader (or me anyway) always keep a look out for the references to your other stories.

Pretty scary how it's probably only a matter of time (and not a long time) before the AI's do take over... Google's pet AI teaching itself chess in four hours has a few people worried right now.