This presentation by Howard Crowhurst offers a groundbreaking analysis of the Carnac alignments in Brittany, France—a site that predates Stonehenge by nearly 2,000 years. Building on the foundational surveys of Professor Alexander Thom, Crowhurst argues that these thousands of standing stones are not merely ritual monuments, but the components of a massive, precise geometrical landscape.
Key Insights & Discoveries:
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The Geometry of the “Egg”: The video begins by deconstructing the Le Menec West cromlech (stone circle). Crowhurst reveals that its peculiar egg shape was likely traced using two 3-4-5 Pythagorean triangles placed back-to-back. This suggests that the builders understood complex geometric relationships—specifically the 7-24-25 triangle—long before Pythagoras was born.
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The Logic of Squares: A central theme is the evolution of sacred shapes: from the circle (heaven) to the square (earth). The presentation demonstrates how the alignments are organized using a progression of Double Squaresand Triple Squares. By combining these shapes, the ancient surveyors avoided the problem of irrational numbers (square roots), creating precise integer-based angles for their monuments.
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Kermario and the Solstices: Moving to the Kermario alignments, the video shows how the axes change direction to align with specific astronomical events. One direction points to the Summer Solstice sunrise, while the other aligns with the Winter Solstice sunset. The distance between the Kermario dolmen and the “Manio 2” giant menhir is shown to be exactly 500 Megalithic Rods, forming the hypotenuse of a massive terrestrial 3-4-5 triangle.
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The “Megalithic Plan” Across Europe: The scope of the presentation expands beyond France. Crowhurst applies this same geometric template—specifically the “Septuple Square” (7 squares) and the Double Square—to other famous sites, including Newgrange in Ireland and the Long Meg/Castlerigg axis in England. This implies a shared, standardized system of measurement and geometry across Neolithic Europe.
Why Watch: This lecture challenges the perception of Neolithic people as simple societies. It presents mathematical evidence that they were capable of geodetic surveys on a grand scale, utilizing the landscape itself to encode the Golden Ratio (Phi) and precise astronomical cycles. Watch the full video to see the mathematical proofs overlaid directly onto the site plans.