This book is about the eruption of Mount Vesuvius, and what happened to the people of Pompeii. It also covers the modern day excavations of the town and what is there now. It is designed for beginning readers to read alone (or aloud to an adult). My children (one boy, one girl) have both enjoyed this from about age 6, although you could read it to children much younger than this. It has a good size print, a maximum of 14 lines of text per double page spread, and lots of pictures. Where there are words that would be outside of a young child's vocabulary, it explains how to say them in broken down syllables, with the accented syllable in capitals. So the first paragraph reads: "Once there was a town named Pompeii. Say: pom-PAY. Near the town there was a mountain named Vesuvius. Say: Veh-SOO-vee-us." The only other instances of this that I can find in the book are Pliny (PLIN-ee), and mosaics (mo-ZAY-iks). I think this is helpful for children who are reading alone. (It meant my children talked about "Pom pay" rather than "Pom pee I"). It can be easily edited out if you are reading aloud. Overall a great book, we have read many others in this series and they are good too.