While looking for edible mushrooms I found several "Fairy Rings" in the woods behind our house. A fairy ring, also known as fairy circle, is a naturally occurring ring or arc of mushrooms.
Fairy rings are caused by fungi that feed on decaying organic matter (e.g., tree stumps, logs, leaves or roots) buried in the soil. Growth of fairy ring fungi begins in the center of the ring, expanding outward in a relatively uniform, circular pattern. Fairy rings can grow and reappear at the same location for years. The circle will start off small in size, getting bigger as it gets older.


