Deep inside the junk pile, Idris is in a makeshift cage. She's muttering to herself about a sad word. Or, in fact, a word that will be sad. You know, that's probably how I sound when I speak French. I bet waiters hear me telling them, "I will have been eating a salad, and used to drink some wine. Thank you."
In another corner of the junk pile, Auntie and Uncle lead the Doctor and friends to a grate in the floor, from which a sickly green light is emanating. Uncle explains that this is where the Doctor can see House. The Doctor looks down and declares that the asteroid is sentient. Auntie is talking about how great it is that House gives them stinky air to breath, when she and Uncle suddenly go dead-eyed and start speaking in a deep, spooky voice. It's the planetoid, and it welcomes the Doctor to... itself, I guess. It also calls the Doctor a Time Lord, telling the Doctor that House has met other Time Lords in the past. House: "Many travelers have come through the rift, like Auntie, and Uncle, and Nephew. I repair them when they break." I just noticed that in the background, Nephew's speech globe is glowing in synch with House's speech, just as Auntie and Uncle's lips are moving. Nice touch. House tells the Doctor that he has met many Time Lords, although none are there at the moment. "But there have been many TARDISes on my back in days gone by." The Doctor tells him not to expect any more, as he's the last Time Lord and his is the last TARDIS. House invites them to stay a while, and (over Rory's dissent) the Doctor accepts the invite, since "it seems like a friendly planet. Literally." He asks Auntie for permission to look around, and she tells him to go wherever he likes. And with a kindly, auntlike gesture, she takes Amy's face in her hands. Which is when we see that one of her hands is a delicate female hand, while the other would look big on a stevedore. So the Doctor and friends take off to wander the planetoid.