Megaliths, sun, and moon

What was the science of men of the Neolithic of which writing can’t be attested ? In this 47-minutes presentation, Howard Crowhurst invites us to reconsider megalithic constructions, which appeared 5000 years B.C. in the region of Carnac, in Brittany, and questions their meaning.

What the relation of megaliths with the sun and the moon? What knowledge in astronomy did men have during the megalithic era? What is the meaning of these constructions? The author’s answer who is open to new reflections.