I never would have found this thing if I hadn't seen it in a book first...and a colleague in helping me with good directions!! It's very tucked away and even with directions, I had a hard time finding it.
"This work has an interesting symbology. The figure brings together in a single symbol two aspects of the Cosmos: the dragon is yang, active principle and divine power; while the serpent is yin, the principle of reproduction and primordial water. The intertwined double spiral represents two directions of one movement: balance and imbalance, birth and death, the initiation of death and the rebirth of new being. The rings thus mark the mid-line between yang and yin, an alternative twofold expansion and the point of balance between two opposing cosmic forces."