"There's...quite a lot to tell," the Doctor begins, though belatedly he realizes his newfound friend might benefit from something slightly warmer to wear for now until they reach the cabin. So he starts to shrug out of his coat, offering it to him. He doesn't have the same immunity to cold as others have recently acquired, but it's generally his first instinct to tend to others, and they don't have terribly far to go.

"You can pick a better coat at the cabin if you like, there's quite a few on offer, left behind by those who were here shortly before we arrived. And that's where our story here begins. Not entirely pleasant, I'm afraid. But to answer your question, we've specifically found ourselves in Canada, quite far north."

As he chatters, he leads Arthur carefully around the lake. And they do have to be careful, of the...lake monster. A story for another time!

"If that word means anything to you, which — is a necessary qualifier, as we've many here from other worlds and times." Like himself.