The First Minor chakra http://www.oraclecards.com/chakras.html

It is a storage location for the universal energy called Kundalini. It is present in all of us in a latent form until it is activated through the process described above. The process of activating the Kundalini is further enhanced by practicing breathing techniques, yoga postures, and specific meditation practices. 

The Kundalini rises through the yang secondary chakras along the back of the body and up through the crown chakra at the top of the head.  There it unites with the universal Spirit, connecting Earth/Heaven, Shakti/Shiva, and creating union with Source.  Kundalini is the Goddess, Earth, Mother,
and Shakti, within all of us, awaiting the Union with God, Spirit, Father, and Shiva.

Back of the body (Yang)                                        Front of the body (Yin)
The coccygeal chakra                                           the perineal chakra

1st Minor Chakra
The Coccygeal Chakra - is located near the base of the spine by the coccyx. 
In our youth, the coccygeal and sacral vertebrae consist of 9 distinct segments that unite into 2 separate bones (the coccyx and sacrum) as we age. These bones represent the physical manifestation of the secondary rear chakras being the Coccygeal and Sacral chakras.  As these bones form the root strength that supports our body throughout this life, the Coccygeal and Sacral chakras work together in certain ways and form a collective repository for memories of past incarnations.

In early youth, these memories (realities) are more apparent than the outer physical experience.  But over time the dense physical reality dominates the consciousness in a way similar to the solidification of the original nine segments into the two separate centers.  Access to the repository available to each center is now subject to rules of the dominating reality.  In other words, the data is still available but retrieval of that data is now subject to a set of rules placed on it by our own psychology - as it develops in the face of our outer environment. 

The position that Saturn holds in an individual's personal astrology will shed a great deal of light as to what may be constricting this data access and what rules may be in place.

The Coccygeal chakra constitutes the first of the ascending (yang) chakras that run up the back of the body. It represents the Shakti (Power) Pole that complements the Shiva (Consciousness/Spirit) Pole above the head. 
Shakti energy resides in the Earth awaiting activation with the universal Shiva consciousness. 

As the lower will (yang) draws the Shakti (Earth) energy through the feet and up the front of the legs it crosses over at The Perineal Chakra and collects in the coccygeal chakra. This Yang reflects the quantity of physical energy available and the will to live in physical reality. 
As a whole, the yang chakras (Governor Channel) represent the force that exists in our lives.
Here sexual energy and Earth (yin) energy coming through the Perineal chakra gets transformed via the energy of Uranus before being raised to the higher chakras.

The Perineal chakra is located in the perineum - between the genitals and the anus - and corresponds to the gross physicality (Matter - Mother). 

The Perineal Chakra is actually situated slightly below the Muladhara, which makes it similar to the Crown chakra being located slightly above the head. As a result, it can be seen that the Perineal, being Earth/Shakti/Yin, provides the root for the outer ring of superconscious awareness when connected to the Crown chakra, being Spirit/Shiva/Yang.

This chakra constitutes the lowest of the descending (yin) chakras that run down the front of the body. 
As a whole, the yin chakras--Functional Channel represent the influence that feeling has in our lives. The adrenal medulla is active here, being functionally related to the sympathetic nervous system, releasing adrenaline into the body in response to stress. 

Through this gate, the physical body is nourished as the yin/Earth Chi is drawn forth via the Coccygeal Chakra and to the rest of the body through the circulation of chi via the Governor Channel and the Functional Channel.

The Perineal chakra is connected by four primary nadis or energy channels, which ultimately represent the four directions oriented in the form of a cross.
 The upright of the cross represents the Sushumnâ, being the central Nadi that runs up the center of the body.

The Perineal chakra represents the red or broadcasting pole of the central Nadi through which runs the universal Shiva (yang) that enters through the Crown chakra, which represents the violet pole. 

It also connects to the point at the bottom of the feet through which the universal Shakti (yin) is absorbed. Connecting to Mother Earth gives access to the power of nature, the basis of shamanism.

The perpendicular to the upright represents the flow of Chi as it circulates in the microcosmic orbit as well as circulating through the lower chakras. 
The Perineal chakra is the lower meeting point of the governor channel (yang) and the functional channel (yin). 

From here it receives yin energy from the Navel and Pubic chakras through the functional channel, and connects to the Coccygeal, Sacral, and Kidney chakras via the governor channel, receiving from them sexual energy and converted Shakti (yin) energy absorbed through the soles of the feet. 

It appears that there is a circulation of Shakti happening here, where the yang chakras (coccygeal and sacral) draw up Shakti through the feet and through the Door of Life and Death (Perineal) chakra, pushing it to the Kidney chakra (The Door of Life) where some get stored. 

The Perineal chakra--through the Perpendicular--balances the movement of Chi while raising it to the point at the center of the Manipura chakra (Wheel of Emanation).  This closes a circuit allowing Shakti to run up through the Coccygeal, Sacral, and Kidney chakras, over to the Wheel of Emanation, and then back down through the Navel, Sea of Chi and Pubic chakras to the crossover point at the Perineum.)

Somewhere in the process, the red drop is raised from the Central Manipura to a point in the Heart where it meets the white drop descending from the Crown chakra. 
The white drop is, metaphorically, a condensation of Shiva obtained through a similar process occurring in the upper chakras.