This broken menhir, located in Brittany, France, is the largest single megalith known in the world (well, at least in Europe). It weighs 350 tons and, when it was standing upright, it was 64ft tall.
The south of Brittany is studded with Neolithic remains: dolmens, alignments, menhirs, cairns—the legacy of a civilization that thrived over ten thousand years ago and about which little is known. This broken menhir, along with all the other mysterious stone structures, was part of what researcher John Michell calls “the science of megalith builders.” In the very distant past, there used to be a unified system of knowledge, a true science—although very different from ours—about the ways of the Earth spirit, symbolically represented as a dragon in folklore and early Christian imagery.
For ancient people, the spirit or energy was a formative cause behind the world of appearances. So the Earth spirit—in modern terminology we refer to it as electromagnetic currents or as telluric streams of energy—flows through countryside on certain routes and certain days, which are governed by celestial bodies. By placing large menhirs on particulars spots, the Neolithic people increased the flow of energy—just as acupuncturists do by placing needles on the meridians in the human body—which, in turn, increased the bounty of the Earth.
But the megaliths had also an effect on human consciousness. By amplifying the magnetic charge of the Earth energy, these megaliths made it easier for ancients to establish contact with the spirit world.