Start gifting
Libro.fm for Business
Start a membership, get two free audiobooks
Bookseller Created
Favorite Children's Chapter Books
Send as gift
Add to Wish List
Almost ready!
In order to save audiobooks to your Wish List you must be signed in to your account.
Log in Create account
Limited-time offer
Get two free audiobooks when you make the switch!
Now’s a great time to shop indie. When you start a new membership supporting local bookstores with promo code SWITCH, we’ll give you two bonus audiobook credits at sign-up.
Make the switch
Gift audiobook credit bundles
You pick the number of credits, your recipient picks the audiobooks, and your local bookstore is supported by your purchase.
Start giftingCave of Wonders (Infinity Ring, Book 5)
Narrator
Dion Graham
This audiobook uses AI narration.
We’re taking steps to make sure AI narration is transparent.
Learn more
Length
4 hours 21 minutes
Language
English
Fix the past. Save the future.
Europe is in the grip of the Dark Ages, but there is a light in the dark: Baghdad. The great city has become a center of learning, populated by scholars, merchants, and explorers from all across the known world. But danger lurks in the desert . . . and Dak, Sera, and Riq must act fast to save the world's greatest library from utter destruction.
Matthew J. Kirby is the critically acclaimed author of the middle-grade novels Icefall, which won the Edgar Award for Best Juvenile Mystery and the PEN Literary Award for Children's Literature; The Clockwork Three, which was named a Publishers Weekly Flying Start; The Lost Kingdom; Last Descendants, an Assassin's Creed novel; The Quantum League: Spell Robbers; and Cave of Wonders, the fifth book in the Infinity Ring series. He was born in Utah and grew up in Maryland, California, and Hawaii. Matthew is currently at work on his next novel.