Actually reading the article, came across: "So science is messy, and despite more than a century of digging, we still don’t really know, for sure, what these h

Actually reading the article, came across: "So science is messy, and despite more than a century of digging, we still don’t really know, for sure, what these huge spires that dominated the ancient Earth really were." So despite the link-bait title, we still don't know and they may not be giant mushrooms.