I thought this was an interesting observation from Bruce Fink in A Clinical Introduction to Freud loc 5992:
Freud does sometimes speak in topological terms like surface and depth (topology being, briefly stated, the study of geometric properties and spatial relations), especially when he uses his archeological metaphor for the mind—“This procedure was one of clearing away the pathogenic psychical material layer by layer, and we liked to compare it with the technique of excavating a buried city” (SE II, p. 139; see also SE VII, p. 12, and SE XXIII, p. 259)—but the term “depth psychology” is above all associated with Carl Jung. Breuer makes it clear that talking about the conscious versus the “subconscious” (a term rarely used by Freud, and later rejected outright by him; SE XX, pp. 197–198) involves employing a spatial metaphor—in other words, a kind of analogical thinking (p. 228). Freud primarily talks about relative distance from or proximity to “the pathogenic nucleus” or M1 (SE II, p. 289), but occasionally lapses into such figures of speech as “deeper strata” (p. 299).
