You’re exploring through a jungle when all of a sudden you stumble across the ruins of a huge temple made of stone—then streets, and houses, and even highways. Who were these vanished people? Where did they go? What were they like? All over the world curious archaeologists have uncovered the remains of civilizations that were once great and now have vanished. This book takes a look at five of the most famous: Ur, Atlantis (if it existed), Pompeii, Angkor Wat, and the Mayans. And who knows what else might be out there, just waiting to be rediscovered?