An interesting natural phenomenon
A Dust Devil is a strong, well-formed, and relatively short-lived whirlwind, ranging from small to large. The primary vertical motion is upward. Dust devils are usually harmless, but can on rare occasions grow large enough to pose a threat to both people and property.
"The whole universe is based on rhythms. Everything happens in circles, in spirals."
— John Hartford
"Like a circle in a spiral
Like a wheel within a wheel
Never ending or beginning
On an ever-spinning reel
As the images unwind
Like the circles that you find
In the windmills of your mind."
— Michel Legrand
"The growth of understanding follows an ascending spiral rather than a straight line."
— Marion Milner
