Inside a mirror box
A pattern built in a mirror box with the shape of an equilateral triangle. The pattern has symmetry type *333 (if we consider the colouring) or 3*3 (if we ignore the colours).
You can see another photo taken in the same mirror box, or another one taken in a mirror box with a different shape.
Exhibit from Simmetria, giochi di specchi - Symmetry, playing with mirrors.