You may have to enlarge the picture to see what I'm talking about here.
The Farm on the lower right is the house I bought back in 1972, when I first moved to France. As you can probably see, it was a large house with a good range of beautiful stone built barns and outbuildings.
In the lower middle of the picture is a small Chestnut copse (that was also ours), and just above it a large dark ring in the grass.
This ring is what some refer to as a 'Fairy Ring', where mushrooms grow. In this case it is a ring of Giant Puffballs, and is the biggest I've ever seen; it has a diameter of about 50 metres.
When it is Puffball season, the ring would show as white. The Puffballs are HUGE; some the size of footballs.
Our present home is in the top left hand corner; the pool being covered with its winter black tarpaulin.
I thank Google Earth for the picture.