Oh?
I already theorized here that the fleshy wall represented Will's brain (because it's very brain-esque), but in this case, I think it must represent a collective brain — a collective consiousness.
(Another Jungian concept, what do you know?)
The "cave" or "brain" stores traumatic memories that have been repressed and holed away. Max has confronted her traumatic memories, not forgotten them, so she has no problem going inside (?).










