A manhole C6
If we ignore the central hole (and the cigarettes, and also something elseā¦), this manhole cover photographed in Ivoire (on the French side of lake Lemano) represents an example of rosette with cyclic symmetry of type C6.
© matematita
foto di Giulio Caiati
The image belongs to the sections...:
6. (C6) (Symmetry)
Drains and manhole covers (Anthology of images)
Drains and manhole covers (Symmetry)