The term ‘Swampland States’ is, within the depth-psychological corpus, a coinage and sustained conceptual framework belonging almost entirely to James Hollis, whose 1996 volume Swamplands of the Soul: New Life in Dismal Places gives it its fullest exposition. Hollis employs the metaphor to denote a cluster of painful affective conditions — loneliness, grief, depression, doubt, guilt, anxiety, despair, and betrayal — that the ego habitually flees but which carry irreducible psychic meaning. The governing argument is teleological rather than pathological: swampland states are not disorders to be eliminated but currents of the deeper psyche whose purposiveness exceeds conscious management. Hollis situates these states within the Jungian architecture of the complex, the shadow, and individuation, insisting that each swampland region contains a ‘nascent life’ retrievable only through courageous engagement. A secondary structural claim holds that angst — understood in the existential sense of Heidegger and Kierkegaard — is the common thread binding every such state, rendering them ultimately anthropological rather than merely clinical phenomena. The term surfaces earlier, implicitly, in Hollis’s 1993 Middle Passage, and it intersects in the broader corpus with Hillman’s soul-loss discourse and Moore’s care-of-the-soul ethics. The primary tension the concept generates is between a therapeutic imperative to relieve suffering and a depth-psychological imperative to inhabit it.