There are two parts to this: it begins with the “Preparation” (3:15 mins), then the “Meditation” (15:20). Allow about 30 minutes (or more if you like) of undisturbed time for the whole experience.
The meditation is based on the Persephone story of Her descent and return, as told in Charlene Spretnak’s Lost Goddesses of Early Greece, wherein Persephone voluntarily descends to the Underworld, the realm of the dead, to comfort them, and ultimately to restore beauty. It is also a shamanic journey to wisdom. The Spring Equinox is the time of Her return, to the joyful embrace of Her Mother Demeter.