There must have been a Civilization One: a highly advanced precursor to the earliest recognized civilization. That's the conclusion reached in this fascinating book. Christopher Knight and Alan Butler began with a quest to crack the mystery of the ancient “megalithic yard”-a precise unit of measurement based on the motions of the Earth, Moon, and Sun. It seems beyond the comprehension of the supposedly unsophisticated people of Stone Age Britain, and yet the measurement kept appearing in ancient structures. The authors' breakthrough discovery goes far beyond the idea of prehistory, and has far-reaching theological ramifications.