In many paths we can see how the snake is represented as a go between for the spirit world and the material world, it is a powerful symbol of pure understanding, of achieving a higher state of being. We see the snake in the Kundalini as a way to pull our raw energy to the god head in order to tap into the universal flow of understanding. We see the snake dancing with its partner in a dance that represents the double helix, so inbred is this idea of the snake as a passage to the source that it is in our very being.
Some things that will help you to understand Keether as you walk your own tree of life;
This is taken from my own personal writings @ http://crowwoman.tumblr.com/
If this turns out to be successful here I will post more entries on Vodou