Emilie and the Hollow World is a delightful book about a young girl's journey to the center of the earth. I loved how the steampunk elements were incorporated into the narrative. The story picked up for me once Emilie and her friends reached the Hollow World. Lots of fantastic monsters and stuff.This is a fun little read and would be appropriate for middle grades and up.Thank you to Angry Robot books for a review copy of this book.