The Scandinavian Tree of Life.
The Gnostics called this serpent CHNOUBIS or KANOBIS and said he was the guardian of a 12-angled pyramid with holes that surrounds the Earth.

Quetzalcoatl / Viracocha
'The Feathered Serpent'.
The serpent god Apep
Enki, as a serpent god
Pictured above left: Greek and Roman artists depicted the god Ammon with a pillar-like trunk in the form of a serpent.
Right: Serpent columns of the Toltec Temple of the Warriors, Chichén Itzá, Yucatán, accord with the world tradition:
the male dragon manifest as the pillar of heaven
Mercury/Hermes.
Caracalla adoring the God-Serpent of Pergamum.
Maya vision serpent.