Brahmarandhra

(“aperture of Brahman”) In traditional
mystical physiology, an opening in the
crown of the head—perhaps corresponding to the fontanel in young children. Although this hole usually closes
up, it is widely believed that if at the time
of death the departing soul can be channeled through this aperture, it will bring
final liberation of the soul (moksha).
The earliest mention of this idea can be
found in Katha Upanishad 6.16, and
exercises to facilitate this practice are
stressed in certain varieties of yoga. The
desire to open this aperture is the reason
behind one of the actions sometimes
performed during cremation. In many
cases the pyre’s heat will itself split the
skull, but when it does not, a long pole is
used to break it open in an effort to
release the soul.