Suspenseful, intriguing, simply irresistible: since its debut just a year ago, Mysteries Unwrapped™ has captivated kids. Even reluctant readers love the appealing, high-interest topics and cool "secret file” design that they just have to open. The newest entry to the series introduces children to some of the world’s most fascinating, but now long-gone, civilizations:   -   Find out about Ur--a thriving ancient city that disappeared under sand   -   Learn about the Maya and the lengths they went to to appease the gods   -   Puzzle out the clues to the legendary lost city of Atlantis   -   Read the graffiti written on the walls of Pompeii before Vesuvius erupted--and preserved intact   -   See the city "hidden by the Gods”: Angkor Wat, a Khmer temple and religious center in Cambodia