"Yes, I remember that much, thank you," Jon says, a little snippy. Frankly, the name they'd been given for the place was suspicious from the start, and now Jon has no reason to believe even that much is the truth. "'In Xanadu did Kubla Khan a stately pleasure-dome decree,'" he mutters, pinching at the bridge of his nose. "'Where Alph, the sacred river, ran through caverns measureless to man, down to a sunless sea.'"

Certainly that could be the inspiration for the name they'd been given for their current location, but why? Jon turns to Murmur.

"This other city, was that on an Earth you're familiar with?" The absurdity of what he's asked hits him after the fact. "How many Earths are you familiar with?"