Within the depth-psychology corpus, ‘Black Earth’ occupies a precise and charged position at the intersection of alchemical nigredo symbolism, chthonic psychology, and the phenomenology of prima materia. Jung’s engagement with the term is most direct in Mysterium Coniunctionis, where the alchemical inscription ‘Take therefore in God’s almighty name this black earth, reduce it very subtly and it will become like the head of a Raven’ anchors the concept to the caput corvi and the initial stage of the opus—a moment of rejoicing in blackness, not lamenting it. Von Franz’s exhaustive commentary on Aurora Consurgens deepens the genealogy: the title of the first parable, ‘Of the Black Earth wherein the Seven Planets took Root,’ situates black earth as the primordial substrate in which the metallic arcana are embedded, the nigredo matrix preceding all differentiation. Jung’s Alchemical Studies extends this into clinical imagery, where black earth migrates from beneath a patient’s feet into her body as an integrated shadow-centre. Hillman, characteristically, pushes the hermeneutic further, distinguishing ‘scorched earth’ from which albedo emerges and insisting on the non-privative ontology of black. The term thus maps onto nigredo, prima materia, shadow integration, and the inferior function—converging on a psychology that honours rather than avoids the fertile darkness underlying transformation.