This CC is similar to the one in the photo I have posted alongside todays CC. Isn't is interesting how the CC stops at the natural boundary? Is it to show us how all is not what it seems? Or maybe, there is an element that is beyond our vision? 
    
6-armed geometry reported at Martinsell Hill
near Wootton Rivers, Wiltshire County, England, on Sunday,
July 19, 2009. Aerial image © by Olivier Morel (WCCSG).