Erudite analysis of the message encoded mathematically in the area of Rennes-le-Chateau. This is a spellbinding book, wholly based on a geometrical and trigonometrical analysis of the landmark features of the Rennes-le-Chateau area. Wood and Campbell present a convincing revelation of the encoded message, namely, that mankind faces the threat of periodic cataclysmic destruction from the impact of comets on the Earth. How did our ancestors come to posess such a detailed knowledge of our Solar System that we have only fairly recently become aware of? Highly recommended! Very rewarding reading material that provides much food for thought.