After extensive research Dutch researcher Willem Witteveen connects data from his own findings with that of other researchers, resulting in groundbreaking conclusions about the true function of the Great Pyramid and its place in history. The Greek mathematician Pythagoras stated: "All is number." The American prophet Edgar Cayce claimed: "Sound is the medicine of the future," and the late Egyptian wisdomkeeper Abd 'el Hakim Awyan always said: "It is all about sound." Willem Witteveen proves that all these men were right and that what we now regard as groundbreaking and new often originated in ancient Egypt, well before the first Egyptian dynasties. This book is divided into five main parts, four of which relate to the four earthly elements Earth, Water, Air and Fire. The fifth part relates to the element or quintessence called Aether. Within this circle all processes on Earth and beyond take place, and the element Aether represents the divine world and is the carrier of all information. The author demonstrates that the Great Pyramid is an enormous library of knowledge, intended for modern generations and containing the golden frequency of Giza, one of the basic values responsible for creation and the existence of life on Earth. We ourselves are the architects and builders of these magnificent ancient monuments. We ourselves in the future tense Witteveen discusses such topics as sound and resonance, antennas, the Schumann frequency, and the special abilities of quartz, hydrogen and wavelengths. A fascinating and visual book