[If it's not a quarry, it's this same bit of tunnel/hallway over and over again. But he supposes that's just one of those universal design things. Can't be helped.]

It just makes you start wondering what they might've taken instead. Although I don't think there's much missing that wasn't missing before...

[For pockets roughly the size of the TARDIS, he's got a pretty good idea of what's usually in them.]

We can triangulate where it's coming from!

[Good ole fashion jiggery pokery can never let you down.]