"In the manuscript, of course, there was also the map, or, rather, a precise description of the map, of the original. It's surprising; you can't imagine how simple the solution is. The map was within everyone's grasp, in full view; why thousands of people have passed it every day for centuries. And the method of orientation is so elementary that you just have to memorise the pattern and the map can be reproduced on the spot, anywhere.

"So simple and so unexpected....Imagine - this is just to give you an idea - it's as if the map were inscribed in the Pyramid of Cheops, its elements displayed for everyone to see, and for centuries people have read and reread and deciphered the pyramid, seeking other allusions, other calculations, completely overlooking its incredible splendid simplicity. A masterpiece of innocence. And fiendish cunning. The Templars of Provins were wizards."

• from the novel Foucault's Pendulum by Umberto Eco

This site documents an on-going investigation into the origins of geometry reportedly marked into the landscape in the positions of certain ancient churches, chateaux and mountain peaks around the ancient hilltop village of Rennes-le-Château, France. This project began as an independent attempt to verify or disprove the findings of Henry Lincoln, as published in his book The Holy Place (1991), and more recently in The Key to the Sacred Pattern (1997). 

A prolonged study and meditation on the 1:25,000 scale map of the region led to a series of decisive breakthroughs in understanding the nature of what is on display in this enigmatic geometric riddle. In short, they led to the solution to the puzzle of the origins of the geometry. In the pages which follow, detailed evidence will be presented with the aim of providing some satisfying answers to the basic questions posed by Lincoln: where, when, how, why.

On the other hand, there is no attempt here to tackle the usual conundrums of the Rennes affair; including the mysterious parchments and involvement of secret societies. However, it is hoped that by putting forward a detailed hypothesis for the true nature and origins of the landscape geometry at Rennes-le-Château, it may help to clear a path to a resolution of some at least of these other intriguing questions.

Beyond these purely "local" concerns, the activities of the map-makers reveal a web of relations which extend across Europe and beyond. The mystery of Rennes-le-Château becomes a gateway to an entirely new understanding of the world-conception of the ancients, and hints at a forgotten spiritual technology of earth and cosmos.  This is a sacred harmonic science of great subtlety and power, with many practical applications, incorporating aspects of star-wisdom, geometry,  water, and the heart. This synthesis of cosmic knowledge is to be found symbolically on display in the layout of Mt Meru, the cosmic world mountain or axis mundi, of every culture and age.