Fairy Ring

Now...Fairy Rings technically are described as a naturally occurring ground circle caused by fungi or other biological agents; figuratively, a fanciful ring or circle of mystical or unusual behaviour or action. The oldest fairy ring on record is over one kilometer wide and believed to be over 700 years old and even Stonehenge has a fairy ring over 100 meters wide and believed to be over 300 years old!

In English folklore, fairy rings were said to be caused by, elves, fairies or pixies dancing in a circle, wearing down the grass beneath their feet. Toads would then sit on the mushrooms, poisoning them; hence the name toadstool.
In Sussex they were called, “hag tracks”, in Devon people thought that fairies caught young horses and rode them in circles.
In Scandinavian folklore, these circles were attributed to elves or witches and were called älvdanser, i.e. elf dances, älvringar, or heksering.
In German-speaking Europe, fairy rings are known as Hexenringe, or "witches rings", stemming from an old medieval belief that the rings represented places where witches would have their gatherings.
In Austria people thought that dragons breath burned the land. Similar myths to those in German folklore can be found in Czech, Slovak, Polish and even Russian folk tales. In the Czech language they are called čarodějné kruhy, as they are thought to have been caused by a dragons having a rest at those places.
Another myth states that fairy rings are doors into the fairies' world, transporting people to other places or making people appear in the same place in a different time.
Young ladies are also warned not to touch dew situated on the grass within the ring, due to the belief that it can cause skin problems.
Source: Wikipedia

There are so many different myths in different countries about fairy rings.
Now...my dh is a Native Canadian and his family believe in the little people which I will talk about another time. But with the fairy rings I have an interesting story about that. About six years ago or so we ended up getting a fairy ring in our front yard. I had a strange feeling and told my dh if he was going to cut the grass to take heed and not mow over the fairy ring. He scoffed at the whole idea but I warned him. First he had problems just getting the lawn mower to work. After 2 weeks of trying, he finally got it to work and proceeded to cut the lawn. Before he could even get to the front yard somehow the blades on the lawn mower ended up getting destroyed...TWICE! LOL! By the time he was able to get a decent blade, the fairy ring just disappeared and he had no trouble cutting the grass in the front yard.
So...is it just mere fungus? Or something more? I'll leave it for you to decide. ;)