"Prehistory literally means the time “before we had written records” (roughly the time before the 4th Century BC) and ancient history is the time since our recorded history. Our concept of ancient history was originally firmly determined by the bible. Written from an insular point of view, the histories of some ancient cultures were distorted, badly neglected or even omitted. The existence of inexplicable monuments, certain man-made marvels and archaeological finds pertaining to our ancient and prehistory, are leading more and more archaeologists to believe long forgotten advanced civilizations existed. As most of our ancient records were lost during the destruction of the great libraries, the following genuine mysteries are the only remnants of their existence."