Fairy Ring (IMAGE) Uppsala University Caption Historically, fairy rings have been associated with various supernatural notions, such as traces of witches' cauldrons, dancing elves or other magical creatures. Nowadays, we know that a fairy ring is formed by the circular underground mycelium, the main body of a fungus (composed of a tangled web of threads called hyphae), which grows radially outwards from a starting point while, over time, dying away in the middle. Credit Markus Hiltunen Usage Restrictions Image free to publish in connection to reports about research by Hanna Johanesson's group at Uppsala University. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.