Everywhere on our planet we meet majestic megalithic structures - traces of long-disappeared cultures. It seems that they were all created according to a single plan. And everywhere, whether Mexico or Colum-biya, Spain or the south of India, unknown astronomers of the Stone Age erected giant chronometers that measure eternity. Who were these thinkers, these initiates, who were able to exert a truly enormous influence both on their era and on such a distant future? What motivated them to build such colossi? Erich von Daniken in his sensational book argues: the Stone Age was completely different than is commonly believed, referring to traditional scientific ideas about the development of our civilization.