The Psychology of Kundalini Yoga
[Carl Jung on Chakras]
This teaching of the chakras should not be misunderstood as concrete and corporeal like the Theosophers tend to do today.
These centers are not corporeal entities.
When one speaks of them, it is understood “as if” they were situated somewhere in the navel, and so on. ~Carl Jung, Kundalini Yoga, Page 75.