Side note: I'm ashamed to admit that it took me until a good 1/3 of the way through the book before I realized the cover image is supposed to be a spiral staircase down into the ground with a boy, holding a light, and a dog going down. Every single time I've seen this cover, since it first came out, I thought this image was a close up of the glowing eye of a blue, scaly dragon. 🙄😂🐲