Natures Propeller

The things you see.  Its a fair sized Eucalypt and someone was doing a record of the trees around a camp site.  On this one the nailed label held a length of bark on the tree when it lost the rest of the bark, as smooth barked gum trees do.  When it dried it was spun in the wind as a propeller leaving the circular marks on the new soft bark.  Amazing what you see if you look.