Researchers have plotted their locations but no-one is sure of their significance https://images.huffingtonpost.com/2011-11-09-mcsparenesness0909.jpg https://im

Researchers have plotted their locations but no-one is sure of their significance https://images.huffingtonpost.com/2011-11-09-mcsparenesness0909.jpg https://images.huffingtonpost.com/2011-11-09-mcsparenesness0... I think the quote probably comes from "The Demon-haunted World" but I read it a very long time ago so I may be wrong.