The World Navel — synonymous with the Omphalos and closely cognate with the axis mundi — occupies a structurally foundational position in the depth-psychological and comparative-mythological corpus. Campbell provides the term’s most explicit depth-psychological articulation: the navel of the world is simultaneously a cosmological center and a personological one, the ‘umbilical point through which the energies of eternity break into time.’ His treatment in both The Hero With a Thousand Faces and The Mythic Image shows how tree, mountain, serpent, and hero-figure are all variant symbolic formulations of this single organizing center. Eliade, approaching from the history of religions, insists on its phenomenological ubiquity — every sacred city, temple, and habitation reproduces the imago mundi, each claiming to stand at the Center, the ‘navel of the universe.’ His analyses in The Myth of the Eternal Return and The Sacred and the Profane constitute the most systematic scholarly mapping of this symbolism. Rank, approaching from the standpoint of art history and psychoanalysis, traces the Omphalos idea through the practical-technical consequences: geodesy, town planning, political ideology — arguing that the ‘humanization of the cosmos’ via the earth’s navel concept was prerequisite to rational geography. Eliade’s phenomenological breadth, Campbell’s mythopoeic synthesis, and Rank’s psycho-cultural genealogy together define the three primary axes along which depth psychology has interrogated this term.