6Glyn, Daniel. "Megalithic Monuments." Scientific American July 1980: 90.
The author explained: "At first Christianity strongly disapproved of people who worshipped stones, but gradually there came a new tolerance, which was generous enough for certain menhirs [standing stones] to be Christianized. Indeed, in Spain and Brittany a few megalithic monuments have been incorporated into functioning modern Christian churches. I take this to be a sign that the older faith of the builders survived in some shape or form until at least the Middle Ages of western Europe."