After recently studying cranial sacral work, I had this insight into the symbolism of the Mayan God Kukulkan, the mystical feathered serpent, and how that is reflected in our actual physiology.
Since ancient times the serpent has been a potent symbol for primal life force energy or chi. The snake, dragon, winged and feathered serpent have appeared in a multitude of cultures and were understood as sacred before they were equated with evil. They were associated with eternal life, wealth, intelligence, sexuality, fire, light and power. But what is the deeper meaning?
The snake is structurally just a head and spine, and it moves in the sinuous wavelike motion of the wave or spiral, which is a basic movement of life force energy. In Eastern traditions, the life force or Kundalini energy resides at the base of the spine in the sacrum, or sacred bone, awaiting to be awakened. Many yogic practices are designed to activate and free this energy. Kundalini was the name of an ancient Hindu Goddess, a female fiery serpent which lies coiled and asleep, representing the human inner soul or Shakti energy. When she does awaken and rises up the spine to the head, she merges with the Shiva or male energy. The upper chakras or energy centers are activated and deeper states of awareness and bliss are experienced. It is often experienced as moving in a rhythmic, wavelike spiraling motion. The snake is a spiritual metaphor for this energy movement in our bodies.
(See http://www.crystalinks.com/kundalini.html).  

And what about the image of the winged serpent? Does our spine have wings at the top, or is this only a metaphor for how the spirit can soar once this energy is freed and awakened? 
We find these images in the caduceus, a double snake winding around a central column with wings at the top, which is used to symbolize the healing power of the medical profession. It was an ancient symbol related to the Greek staff of Hermes which had great healing powers. (See http://www.crystalinks.com/caduceus.html). This also recalls the structure of a DNA helix, and so is symbolic of physical reality and manifested form.
In Mayan tradition, Kukulkan is the deity who appears as the feathered serpent, and was thought to be the savior or bringer of light. This deity is also known as Quetzalcoatl ("feathered serpent") in Aztec tradition. Feathers represent the ascension of human consciousness to higher source.
Hindu and Egyptian traditions describe a central column of energy in our spine, with two spiraling side channels that wind around it. Rising upward, each chakra has progressively more petals until the 6th chakra, between the eyebrows, which is depicted as having only two petals, like wings. The 7th chakra has 1000 petals. Why would the 6th only have two?

At the top of the spine is a relatively unknown bone called the sphenoid bone, which is one of the many bones that form the skull. This bone is the anterior base of the skull, in the very center of the head. It is the area where the nerves leave the brain to connect with the spinal column and the lower spine. This bone also cradles the pituitary gland, is close to the ears and has the nerves of the eyes passing through it. The pituitary controls the functions of all other endocrine glands and is associated with the 6th chakra or third eye.
The sphenoid is the sacred bone at the top of the spine, equally as potent as the sacrum at the bottom. It is strongly related to the 6th and 7th chakras, relating to wisdom and spiritual enlightenment. It is from the center of this bone, at the back of the upper pallet, that mystics experience the sweet taste of amrita, or the nectar of divine bliss and immortality, which flows down from the crown chakra when one enters very deep states of meditation. (For a wonderful look at the sphenoid and all the skull bones, see http://www.youtube.com/watch?v=Nc5IRj3OJhE).
The sphenoid also supports part of the central core of the brain stem, which is the most ancient and smallest part of the brain, and is called (significantly) the reptilian brain. This part of the brain regulates the breathing, heartbeat, fight or flight mechanisms, mating and survival. It is preverbal, instinctual and ritualistic and is similar to the brains of reptiles and birds. The basic emotions of love, hate, lust, fear and contentment come from this primitive part of our selves. Anyone who has contacted these powerful emotions knows how compelling they are, and how they can overcome rational thought. Small wonder that this wild, serpent-like, primal part of ourselves has become feared and demonized.

The interesting thing about the sphenoid bone is that it happens to be shaped roughly like a butterfly or bird, with two wings. When a person is healthy and normal, there is a very subtle pulsing and flexing of the cranial bones known as the cranial pulse. The sphenoid bone has a very tiny, but important and perceptible, pulsing that resembles the flexing of wings forward and backward. (For an animated view of this, see http://www.youtube.com/watch?v=GeZ2sv1rSZI). This pulse has been noticed for a long time by Osteopaths and cranial-sacral body workers, but is still debated in the traditional medical community. It begins pulsing through the experience of a normal vaginal birth process. It can become blocked through trauma and tension, and can be engaged with and encouraged to flow by sensitive body workers.
What happens when strong electrical impulses are freed to flow up a healthy and open spine, and reach the deeper reptilian brain at the base of the skull, allowing the bones around it to flex and flow? Perhaps this would stimulate the optic nerves, our hormonal system and the upper chakras, bringing "light" and expansion to the primitive areas of our being, and be experienced as an uplifting sense of being "saved" from being controlled by our more base impulses.
This strong, ancient symbol of the winged serpent can be seen as an analogy for an actual physical process happening within the physiology of our bodies, as well as an accurate description of the process of awakening to more expanded states of consciousness.
Consider taking some time to meditate on your sphenoid bone, which can be contacted directly with your fingers only at the temples just in front of the ear, where the upper part of the ear meets the head. Place your fingers there and breathe, and feel for the subtle pulses and energies contained by this hidden bone, which holds the seats of our awakened perceptions.
Breathe spirals up from the base of your spine, and fly!

by Amara Karuna, Oct 2010

Author's Bio: 

Amara has been studying alternative healing since 1978, having studied Swedish, Esalen and deep bodywork, Chinese healing, herbology, and Macrobiotics. She was trained in psychic reading, healing and meditation for two years at the Berkeley Psychic Institute, and has taught numerous classes in the same since then. She created, edited and published Heartsong Review, a resource guide for New Age spiritual music, for nine years.
Amara taught Re-evaluation Co-counseling, a method of peer counseling, for over five years, and has been studying and practicing it since 1983. She developed her own approach to peer counseling, called Wholistic Peer Support, integrating many ideas from RC with spiritual meditation practices, psychic healing and body centered techniques. She began studying Tantra and Sacred Spot work, a method of sexual healing, on Maui in 2003. She has been teaching Sacred Spot work for men and women, and leading one night Tantra Pujas, on the Big Island and Maui.
She is a minister, Sheikha (teacher) and initiator on the Sufi path, and has been studying that path, which encourages honoring of all religions, since 1983. She served as Secretary, and then Chairperson, on the Core of the International Council for the Dances of Universal Peace. She has created and staffed many weekend Dance workshops. She also has led and participated in many Goddess song circles, camps and Neo-pagan rituals since 1980, being attracted to the honoring of Nature, women and the natural cycles, and continues to offer these at La'akea.
She has been an graphic artist and scrimshander since 1980, and has illustrated several books and magazines. She currently is producing reproductions of her art as banners and prayer flags, which can be seen at www.karunaarts.com. Recently she has become passionate about creating and recording music, and has published several CD's of original music.