Ouroboros

Serpent eating its tail — eternity, "the All is One" (hen to pan) of Greco-Egyptian alchemy.
Tradition: alchemy, egyptian, gnostic · Period: Enigmatic Book of the Netherworld, Tutankhamun's shrine (14th c. BCE); Chrysopoeia of Cleopatra
Sources
Image: Public domain · AnonMoos · source. Please keep this credit when you use it.