Ancient empires rose and fell, new worlds were conquered and lost. Who were the people and how did their civilizations unfold? Who were the Druids? Did Atlantis exist? Where is the Holy Grail? What happened to the Neanderthals? What were the Vikings doing in the Canadian High Arctic? The contributors to this volume put forward their views and findings to help solve some of the greatest enigmas of history. The reader is invited to travel into lost worlds, re-examining ancient history to discover the secrets of the past. In a re-evaluation of man's history, using the high-tech tools of modern archaeology, geology and astronomy, civilizations lost for thousands of years are revealed.