Photos

Knocker on an old door in a street of Le Vieux-Mans.
While waiting for the spectacle of LES CHIMERES which is held after fallen the night during july, in this district and on the Gallo-Roman wall, you will be able to seek this mysterious knocker .

Wikipedia reference:
Ouroboros indicates the drawing of a snake or a dragon which bites the tail. It is about a word of old Greek ουροβοροs, Latinized in the form uroborus which means literally "which bites the tail"�.

Christianity
Significance and symbolism
The ouroboros a symbol of cyclic time and continuity of the life.

Into heraldic, one finds this figure which blasonne: snake or more rarely dragon folded in round.

In alchemy, the ouroboros is a purifying seal. It indeed symbolizes the eternal unit of all things, incarnating the cycle of the life (birth) and death.