Jack stepped over to follow the Doctor, still frowning at him. He listened to what he was saying, but he got the distinctive impression that they words weren't meant for him.

"Doctor," he waved a hand, trying to get his attention. "Eyes down here. Got me with you remember. You're going to need to explain what's going on in that big old head of yours. Do you know where we are? Do you recognise it? That's good, right? I mean, it'll be easier to find places if you know where we are?"