“There was no name for it, so we made up a name. It was the darkness, the damp emptiness you’d feel when you were down there alone in those tunnels. It was like you were in a place where you felt dead and buried in the dark. But you were alive. And you were scared. Your own breath kind of echoed in the darkness, loud enough to give you away. Or so you thought. I don’t know. It’s hard to explain. Just… the black echo.”
