The question is how large the organisms must have been under ground: http://www.bbc.com/earth/story/20141114-the-biggest-organism-in-the-world http://www.bbc.co

The question is how large the organisms must have been under ground: http://www.bbc.com/earth/story/20141114-the-biggest-organism-in-the-world http://www.bbc.com/earth/story/20141114-the-biggest-organism...