Order in nature - interesting emergent shapes

I like to take photos of shapes which emerge naturally.





Swirls formed by strong winds and turbulence. (click for larger image)





Windswept snow creating a smaller-scale imitation of a mountain face. (click for larger image)





The hole to the right was man-made. The heavy snowfall that followed built a structure adapted to the man-made gap. (click for larger image)





Car wash soap bubbles of sizes adequate to fill an irregular space. (click for larger image)